Optics ExpressThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

This page shows you the latest items in this publication.

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

4861 records returned

XPM and SBS nonlinear effects on MLSE with varying uncompensated dispersionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We investigate the performance of a maximum likelihood sequence estimation (MLSE) receiver at 10.7 Gb/s in the presence of two optical nonlinear impairments, cross-phase modulation (XPM) and stimulated Brillouin scattering (SBS). We find that the tolerance to both nonlinearities decreases with ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: John D. DownieJason HurleyXianming Zhu Source Type: journals

Magnetic field distribution of a highly focused radially-polarized light beamEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A simple expression for the magnetic filed of a highly focused radially polarized light is derived and the incorrect results for the time averaged Poynting vector and the trapping stability for a gold particle presented in the paper “Trapping metallic Rayleigh particles with radial ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Yaoju Zhang Biaofeng Ding Source Type: journals

Optical and electrical properties of Au nanoparticles in two-dimensional networks: an effective cluster modelEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We report a study of the optical and electric properties of Au nanoparticle networks grown on the porous alumina membrane by dry atom sputtering deposition approach. An effective cluster model was developed to evaluate the dielectric function and the electrical conductivities of the nanoparticle ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Huimin SuYingshun LiXiao-Yuan LiKam Sing Wong Source Type: journals

Tunable delay slow-light in an active fiber Bragg gratingEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We proposed and experimentally demonstrated an extremely simple and feasible slow-light technique to achieve tunable optical delay by using the Er/Yb codoped fiber Bragg grating (FBG). The signal light experiences strong dispersion when it is launched into the reflection edge of FBG, and the group ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Kai QianLi ZhanHonggen LiXiao HuJunsong PengLiang ZhangYuxing Xia Source Type: journals

Pyroliton: pyroelectric spatial solitonEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The concept of optical beam self-trapping in pyroelectric photorefractive medium is presented. We show that the temperature controlled spontaneous polarisation of ferroelectric crystals produces an optical nonlinearity that can lead to formation of 2-D spatial soliton named pyroliton. Experimental ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Jassem SafiouiFabrice DevauxMathieu Chauvet Source Type: journals

170 Gbit/s transmission in an erbium-doped waveguide amplifier on siliconEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Signal transmission experiments were performed at 170 Gbit/s in an integrated Al_2O_3:Er^3+ waveguide amplifier to investigate its potential application in high-speed photonic integrated circuits. Net internal gain of up to 11 dB was measured for a continuous-wave 1532 nm signal under 1480 nm ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Jonathan D. B. BradleyMarcia Costa e SilvaMathilde GayLaurent BramerieAlfred DriessenKerstin WörhoffJean-Claude SimonMarkus Pollnau Source Type: journals

Volumetric microvascular imaging of human retina using optical coherence tomography with a novel motion contrast techniqueEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Phase variance-based motion contrast imaging is demonstrated using a spectral domain optical coherence tomography system for the in vivo human retina. This contrast technique spatially identifies locations of motion within the retina primarily associated with vasculature. Histogram-based noise ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Jeff FinglerRobert J. ZawadzkiJohn S. WernerDan SchwartzScott E. Fraser Source Type: journals

Geometry dependence of field enhancement in 2D metallic photonic crystalsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Geometry dependence of surface plasmon resonance of 2D metallic photonic crystals (PCs) was assessed using rigorous 3D finite difference time domain analysis. PCs of noble metallic rectangular and cylindrical nanopillars in square and triangular lattices on thick noble metal film were simulated for ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Hari P. PaudelKhadijeh BayatMahdi Farrokh BaroughiStanley MayDavid W. Galipeau Source Type: journals

Strong exciton-photon coupling in inorganic-organic multiple quantum wells embedded low-Q microcavityEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Optoelectronic-compatible heterostructures are fabricated from layered inorganic-organic multiple quantum wells (IO-MQW) of Cyclohexenyl ethyl ammonium lead iodide, (C_6H_9C_2H_4NH_3)_2PbI_4 (CHPI). These hybrids possess strongly-resonant optical features, are thermally stable and compatible with ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: K. PradeeshJ. J. BaumbergG. Vijaya Prakash Source Type: journals

Design of zero reference codes using cross-entropy methodEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper considers the use of autocorrelation properties to design zero reference codes (ZRCs) for optical applications. Based on the properties of the autocorrelation function, the design of an optimum ZRC problem is transformed into a minimization problem with binary variables, and the ... (Source: Optics Express)
Source: Optics Express - November 19, 2009 Category: Physics Authors: Jung-Chieh Chen Source Type: journals

Blue light generated by intra-cavity frequency doubling of an edge-emitting diode laser with a periodically poled LiNbO_3 crystalEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We demonstrate for the first time to our knowledge intra-cavity frequency doubling (ICFD) of an edge-emitter diode laser using a 10 mm-long 5.0 μm periodically poled LiNbO_3 (PPLN) crystal. An optical output power of 33 mW second harmonic blue light at 490.5 nm is generated at 1.0 A injection ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Kang LiAiyun YaoN. J. CopnerC. B. E. GawithIan G KnightHans-Ulrich PfeifferBob Musk Source Type: journals

A geometrical optics polarimetric bidirectional reflectance distribution function for dielectric and metallic surfacesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A polarimetric bidirectional reflectance distribution function (pBRDF), based on geometrical optics, is presented. The pBRDF incorporates a visibility (shadowing/masking) function and a Lambertian (diffuse) component which distinguishes it from other geometrical optics pBRDFs in literature. It is ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: M. W. HydeJ. D. SchmidtM. J. Havrilla Source Type: journals

Analytical study of optical bistability in silicon-waveguide resonatorsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a theoretical model that describes accurately the nonlinear phenomenon of optical bistability in silicon-waveguide resonators but remains amenable to analytical results. Using this model, we derive a transcendental equation governing the intensity of a continuous wave transmitted through ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Ivan D. RukhlenkoMalin PremaratneGovind P. Agrawal Source Type: journals

Microwave generation in an electro-absorption modulator integrated with a DFB laser subject to optical injectionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper presents a new technique to generate microwave signal using an electro-absorption modulator (EAM) integrated with a distributed feedback (DFB) laser subject to optical injection. Experiments show that the frequency of the generated microwave can be tuned by changing the wavelength of the ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Ning Hua ZhuHong Guang ZhangJiang Wei ManHong Liang ZhuJian Hong KeYu LiuXin WangHai Qing YuanLiang XieWei Wang Source Type: journals

Lattice modes mediate radiative coupling in metamaterial arraysEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We show that a resonant response with very high quality factors can be achieved in periodic metamaterials by radiatively coupling their structural elements. The coupling is mediated by lattice modes and can be efficiently controlled by tuning the lattice periodicity. Using a recently developed ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Andreas BitzerJan WallauerHannes MerboldHanspeter HelmThomas FeurerMarkus Walther Source Type: journals

Tri-material multilayer coatings with high reflectivity and wide bandwidth for 25 to 50 nm extreme ultraviolet lightEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Magnesium/silicon carbide (Mg/SiC) multilayers have been fabricated with normal incidence reflectivity in the vicinity of 40% to 50% for wavelengths in the 25 to 50 nm wavelength range. However many applications, for example solar telescopes and ultrafast studies using high harmonic generation ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: A. AquilaF. SalmassiYanwei LiuE.M. Gullikson Source Type: journals

Region-restricted rapid keypoint registrationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A two-stage keypoint registration approach is proposed to achieve frame-rate performance, while maintaining high accuracy under large perspective and scale variations. First, an agglomerative clustering algorithm based on an effective edge significance measure is adopted to derive the corresponding ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Zhenghao LiWeiguo GongA.Y.C. NeeS.K. Ong Source Type: journals

A Low Bending Loss Multimode Fiber Transmission SystemEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper presents a high bend tolerant multimode optical fiber transmission system that is compatible with standard 50 μm graded index multimode fiber, in terms of achievable bandwidth and interconnectivity losses. When the 10 loops of the proposed bend resistive multimode fiber were ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Denis Donlagic Source Type: journals

Incoherent “Slow and Fast Light”Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We show experimentally that the effects of pulse delay and advancement usually ascribed to the “slow and fast light” under conditions of the coherent population oscillations (CPO) can be universally observed with incoherent light fields on objects with the pure-intensity nonlinearity. ... (Source: Optics Express)
Source: Optics Express - November 18, 2009 Category: Physics Authors: Valerii Zapasskii Gleb Kozlov Source Type: journals

Conjugated polymer-fullerene blend with strong optical limiting in the near-infraredEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Optical-quality, melt processable thick films of a conjugated polymer blend containing poly(2-methoxy-5-(2-ethyl-hexyloxy)-(phenylene vinylene)) (MEH-PPV), a C_60 derivative (PCBM) and a plasticizer (1,2-di-iso-octylphthalate) have been developed and their nonlinear absorption and optical limiting ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: San-Hui ChiJoel M. HalesMatteo CozzuolCharles OchoaMadison FitzpatrickJoseph W. Perry Source Type: journals

Detection of counterfeit U.S. paper money using intrinsic fluorescence lifetimeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Genuine U.S. Federal Reserve Notes have a consistent, two-component intrinsic fluorescence lifetime. This allows for detection of counterfeit paper money because of its significant differences in fluorescence lifetime when compared to genuine paper money. We used scanning two-photon laser ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: Thomas H. Chia Michael J. Levene Source Type: journals

Combined photoacoustic and ultrasound biomicroscopyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We report on the development of an imaging system capable of combined ultrasound and photoacoustic imaging based on a fast-scanning single-element 25-MHz ultrasound transducer and a unique light-delivery system. The system is capable of 20 ultrasound frames per second and slower photoacoustic frame ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: Tyler HarrisonJanaka C. RanasinghesagaraHuihong LuKory MathewsonAndrew WalshRoger J. Zemp Source Type: journals

THz photomixing synthesizer based on a fiber frequency combEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A frequency doubled erbium doped modelocked fiber frequency comb is used to implement a THz photomixing synthesizer. The useful THz linewidth is in order of 150 kHz and has been assessed along with the frequency accuracy by spectroscopic measurements demonstrating a relative accuracy of ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: Gaël MouretFrancis HindleArnaud CuissetChun YangRobin BocquetMichel LoursDaniele Rovera Source Type: journals

Intense red-emitting Y_4Al_2O_9:Eu^3+phosphor with short decay time and high color purity for advanced plasma display panelEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A new phosphor Y_4Al_2O_9:Eu^3+ (YAM:Eu^3+) emitting intense monochromatic red at 612 nm under vacuum ultraviolet (VUV) and ultraviolet (UV) excitations has been developed for application in next generation plasma display panels (PDPs). The developed phosphor has better luminescence efficiency, ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: Ravishanker YadavAtif F. KhanAshish YadavHarish ChanderDivi HaranathBipin Kr. GuptaVirendra ShankerSanta Chawla Source Type: journals

Autonomous observations of in vivo  fluorescence and particle backscattering in an oceanic oxygen minimum zoneEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The eastern South Pacific (ESP) oxygen minimum zone (OMZ) is a permanent hydrographic feature located directly off the coasts of northern Chile and Peru. The ESP OMZ reaches from coastal waters out to thousands of kilometers offshore, and can extend from the near surface to depths greater than 700 ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: A. L. WhitmireR. M. LetelierV. VillagránO. Ulloa Source Type: journals

High-speed modulation of a compact silicon ring resonator based on a reverse-biased pn diodeEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
High speed modulation based on a compact silicon ring resonator operating in depletion mode is demonstrated. The device exhibits an electrical small signal bandwidth of 19GHz. The device is therefore a candidate for highly compact, wide bandwidth modulators for a variety of applications. (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: F. Y. GardesA. BrimontP. SanchisG. RasigadeD. Marris-MoriniL. O'FaolainF. DongJ. M. FedeliP. DumonL. VivienT. F. KraussG. T. ReedJ. Martí Source Type: journals

Thermo-optic locking of a semiconductor laser to a microcavity resonanceEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We experimentally demonstrate thermo-optic locking of a semiconductor laser to an integrated toroidal optical microcavity. The lock is maintained for time periods exceeding twelve hours, without requiring any electronic control systems. Fast control is achieved by optical feedback induced by ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: T. G. McRaeK. H. LeeM. McGovernD. GwytherW. P. Bowen Source Type: journals

Hartmann-Shack wavefront sensing for nonlinear materials characterizationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present two new techniques exploiting a Hartmann-Shack wavefront sensor to characterize the optical self-focusing effect of nonlinear materials. We demonstrate that the defocus Zernike coefficient (C5) can be used to quantify nonlinear optical properties of materials. In the first technique ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: D. RativaR. E. de AraujoA. S. GomesB. Vohnsen Source Type: journals

Anisotropy and particle-size effects in nanostructured plasmonic metamaterialsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We study the optical properties of metamaterials formed by layers of metallic nanoparticles. The effective optical constants of these materials are retrieved from the calculated angle-dependent Fresnel reflection coefficients for s and p incident-light polarization. We investigate the degree of ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: Isabel Romero F. Javier García de Abajo Source Type: journals

Wavelength tuning of planar photonic crystals by local processing of individual holesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Tuning of the resonant wavelength of a single hole defect cavity in planar photonic crystals was demonstrated using transmission spectroscopy. Local post-production processing of single holes in a planar photonic crystal is carried out after selectively opening a masking layer by focused ion ... (Source: Optics Express)
Source: Optics Express - November 17, 2009 Category: Physics Authors: H. H. J. E. KickenP. F. A. AlkemadeR. W. van der HeijdenF. KaroutaR. NötzelE. van der DriftH. W. M. Salemink Source Type: journals

Simultaneous reference and differential waveform acquisition in time-resolved terahertz spectroscopyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a new method for data acquisition in time-resolved terahertz spectroscopy experiments. Our approach is based on simultaneous collection of reference and differential THz scans. Both the optical THz generation beam and the pump beam are modulated at two different frequencies that are not ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Krzysztof IwaszczukDavid G. CookeMasazumi FujiwaraHideki HashimotoPeter Uhd Jepsen Source Type: journals

High repetition rate dual-rod acousto-optics Q-switched composite Nd:YVO4 laserEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We demonstrate the high-repetition rate acousto-optic Q-switching of a dual-rod Nd:YVO4 laser. Two thermally bonded composite YVO4-Nd:YVO4-YVO4 rod crystals were used as the gain medium to reduce the serious thermal effect. The pump mode and its influence on the laser mode were analyzed, and the ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Xingpeng YanQiang LiuXing FuHailong ChenMali GongDongsheng Wang Source Type: journals

Highly birefringent vaterite microspheres: production, characterization and applications for optical micromanipulationEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
This paper reports on a simple synthesis and characterization of highly birefringent vaterite microspheres, which are composed of 20–30 nm sized nanocrystalls. Scanning electron microscopy shows a quite disordered assembly of nanocrystals within the microspheres. However, using optical ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Simon J. ParkinRobert VogelMartin PerssonMaren FunkVincent L. LokeTimo A. NieminenNorman R. HeckenbergHalina Rubinsztein-Dunlop Source Type: journals

A simple technique for accurate and complete characterisation of a Fabry-Perot cavityEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
It has become a significant challenge to accurately characterise the properties of recently developed very high finesse optical resonators (F > 106). A similar challenge is encountered when trying to measure the properties of cavities in which either the probing laser or the cavity length is ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: C. R. LockeD. StuartE. N. IvanovA. N. Luiten Source Type: journals

Adaptive improved element free Galerkin method for quasi- or multi-spectral bioluminescence tomographyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Bioluminescence tomography (BLT) has become a powerful tool for whole-body small animal imaging. In this contribution, an adaptive improved element free Galerkin method (IEFGM) is presented to perform a quantitative reconstruction of the internal light source using quasi- or multi-spectral ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Chenghu QinJie TianXin YangJinchao FengKai LiuJunting LiuGuorui YanShouping ZhuMin Xu Source Type: journals

Trapping double negative particles in the ray optics regime using optical tweezers with focused beamsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The capabilities of optical tweezers to trap DNG (double negative) spherical particles, with both negative permittivity and permeability, are explored in detail by analyzing some interesting theoretical features not seeing in conventional DPS (double positive) particles possessing positive ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Leonardo A. Ambrosio H. E. Hernández-Figueroa Source Type: journals

Complete compensation of pulse broadening in an amplifier-based slow light system using a nonlinear regeneration elementEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We experimentally demonstrate complete compensation of pulse broadening in an amplifier-based slow light system. The configuration of the delay line basically consists of two stages: a conventional Brillouin slow light system and a nonlinear regeneration element. Signal pulses experienced both ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Sanghooon ChinMiguel Gonzalez-HerraezLuc Thévenaz Source Type: journals

Resonance-enhanced optical forces between coupled photonic crystal slabsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The behaviors of lateral and normal optical forces between coupled photonic crystal slabs are analyzed. We show that the optical force is periodic with displacement, resulting in stable and unstable equilibrium positions. Moreover, the forces are strongly enhanced by guided resonances of the ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Victor LiuMichelle PovinelliShanhui Fan Source Type: journals

Devil’s vortex-lensesEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In this paper we present a new kind of vortex lenses in which the radial phase distribution is characterized by the “devil’s staircase” function. The focusing properties of these fractal DOEs coined Devil’s vortex-lenses are analytically studied and the influence of the ... (Source: Optics Express)
Source: Optics Express - November 16, 2009 Category: Physics Authors: Walter D. FurlanFernando GiménezArnau CalatayudJuan A. Monsoriu Source Type: journals

Geometrically robust image watermarking by sector-shaped partitioning of geometric-invariant regionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
In a feature-based geometrically robust watermarking system, it is a challenging task to detect geometric-invariant regions (GIRs) which can survive a broad range of image processing operations. Instead of commonly used Harris detector or Mexican hat wavelet method, a more robust corner detector ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: Huawei TianYao ZhaoRongrong NiGang Cao Source Type: journals

CO_2 laser induced long period gratings in optical microfibersEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Long period gratings (LPGs) are fabricated by use of focused high frequency CO_2 laser pulses to periodically modify the transverse dimension of silica microfibers. A 20-period LPG with a 27dB attenuation dip is realized in a microfiber with a diameter of ~6.3μm. The resonant wavelength has a ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: Haifeng XuanWei JinMin Zhang Source Type: journals

The general theory of phase shifting algorithmsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We have been reporting several new techniques of analysis and synthesis applied to Phase Shifting Interferometry (PSI). These works are based upon the Frequency Transfer Function (FTF) and how this new tool of analysis and synthesis in PSI may be applied to obtain very general results, among them; ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: M. ServinJ. C. EstradaJ. A. Quiroga Source Type: journals

Non-sequential optimization technique for a computer controlled optical surfacing process using multiple tool influence functionsEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Optical surfaces can be accurately figured by computer controlled optical surfacing (CCOS) that uses well characterized sub-diameter polishing tools driven by numerically controlled (NC) machines. The motion of the polishing tool is optimized to vary the dwell time of the polisher on the workpiece ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: Dae Wook KimSug-Whan KimJames H. Burge Source Type: journals

Surface plasmon resonance and field enhancement in #-shaped gold wires metamaterialEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A #-shaped gold wires metamaterial is designed for surface enhanced Raman spectroscopy (SERS) and sensing. The tunability of surface plasmon resonance (SPR) excitations, hotspots distribution, localized field enhancement and sensitivity of the structure are investigated. In contrast to most ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: W. Q. HuE. J. LiangP. DingG. W. CaiQ. Z. Xue Source Type: journals

LD bar corner-pumped TEM_00 CW composite Nd:YAG laserEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Ray-tracing algorithm was used to simulate the pump absorption efficiency and pump absorption distribution of LD corner-pumped laser with different parameters of Nd:YAG composite slab crystal. Resonator experiment was performed to suppress the oscillation of higher-order modes and realize TEM_00 ... (Source: Optics Express)
Source: Optics Express - November 13, 2009 Category: Physics Authors: Song GaoHuan LiuDongsheng WangMali Gong Source Type: journals

Nanowires/microfiber hybrid structure multicolor laserEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We demonstrate a compact hybrid structure red-green-ultraviolet three-color laser consisting of three distinct semiconductor nanowires (CdSe, CdS and ZnO) attached to a silica microfiber, which is pumped by 355 nm wavelength laser pulses. The exciting of the nanowires and the collection of the ... (Source: Optics Express)
Source: Optics Express - November 12, 2009 Category: Physics Authors: Ye DingQing YangXin GuoShanshan WangFuxing GuJian FuQing WanJipeng ChengLimin Tong Source Type: journals

ZnO subwavelength wires for fast-response mid-infrared detectionEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Room temperature operating thermal detection for mid-infrared light based on ZnO subwavelength wires has been demonstrated. Electric resistance in ZnO wires increases linearly with the intensity of incident light. Noise equivalent power (NEP) of 5.8 μW/Hz^1/2 (at 1 kHz) with typical response ... (Source: Optics Express)
Source: Optics Express - November 12, 2009 Category: Physics Authors: Wei DaiQing YangFuxing GuLimin Tong Source Type: journals

Near-infrared optical response of thin film pH-sensitive hydrogel coated on a gold nanocrescent arrayEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
A hydrogel-based chemiresponsive sensor for monitoring H^+ (pH) has been developed by coating the surface of a gold nanocrescent array structure with a thin film of a poly(2-hydroxylethyl methacrylate)-based (poly-HEMA) hydrogel. The transmission measurement results of the close-packed gold ... (Source: Optics Express)
Source: Optics Express - November 12, 2009 Category: Physics Authors: Hao JiangJan MarkowskiJayshri Sabarinathan Source Type: journals

Mid-infrared near-field spectroscopyEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We demonstrate continuous infrared spectra from 20 nm sample spots, by combining dispersive Fourier-transform infrared spectroscopy (FTIR) with scattering near-field microscopy (s-SNOM). With the “apertureless” tip of a standard AFM cantilever in one arm of a Michelson interferometer ... (Source: Optics Express)
Source: Optics Express - November 12, 2009 Category: Physics Authors: Sergiu AmarieThomas GanzFritz Keilmann Source Type: journals

Femtosecond mode-locked fiber laser employing a hollow optical fiber filled with carbon nanotube dispersion as saturable absorberEmail this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We propose a novel in-line saturable absorber incorporating a hollow optical fiber (HOF) filled with single-walled carbon nanotube (SWCNT) dispersion. The evanescent field of the propagating light in the ring core interacts with the SWCNT/polymer composite distributed over the whole length of the ... (Source: Optics Express)
Source: Optics Express - November 12, 2009 Category: Physics Authors: Sun Young ChoiFabian RotermundHojoong JungKyunghwan OhDong-Il Yeom Source Type: journals