Azimuthal asymmetry of the coherent backscattering cone: Theoretical results
Michael I. Mishchenko, Janna M. Dlugach, and Li Liu
The azimuthal asymmetry of the polarized backscattering cone and the intimately related polarization opposition effect (POE) are corollaries of the theory of coherent backscattering (CB) valid in the asymptotic limit of very small particle packing density. In this paper we use numerically exact solu ... [Phys. Rev. A 80, 053824 (2009)] published Mon Nov 23, 2009.
Isolated sub-30-as pulse generation of an He ion by an intense few-cycle chirped laser and its high-order harmonic pulses
Peng-Cheng Li, Xiao-Xin Zhou, Guo-Li Wang, and Zeng-Xiu Zhao
We present an efficient method to generate a ultrashort attosecond (as) pulse when a model He ion is exposed to the combination of an intense few-cycle chirped laser pulse and its 27th harmonics. By solving the time-dependent Schrodinger equation, we found that high-order harmonic generation (HHG) f ... [Phys. Rev. A 80, 053825 (2009)] published Mon Nov 23, 2009.
Extended model of the photoinitiation mechanisms in photopolymer materials
Shui Liu, Michael R. Gleeson, Dusan Sabol, and John T. Sheridan
In order to further improve photopolymer materials for applications such as data storage, a deeper understanding of the photochemical mechanisms which are present during the formation of holographic gratings has become ever more crucial. This is especially true of the photoinitiation processes, sinc ... [J. Appl. Phys. 106, 104911 (2009)] published Mon Nov 23, 2009.
Hybrid InP-based photonic crystal lasers on silicon on insulator wires
Y. Halioua, T. J. Karle, F. Raineri, P. Monnier, I. Sagnes et al.
We report on InP-based photonic crystal lasers operating at 1.585 [mu]m at room temperature, integrated with and evanescently coupled to silicon on insulator (SOI) waveguides. By optically pumping at 1.18 [mu]m through the SOI wires, pulsed laser emission from line defect photonic crystal waveguid ... [Appl. Phys. Lett. 95, 201119 (2009)] published Fri Nov 20, 2009.
Surface-plasmon mode hybridization in subwavelength microdisk lasers
R. Perahia, T. P. Mayer Alegre, A. H. Safavi-Naeini, and O. Painter
Hybridization of surface-plasmon and dielectric waveguide whispering-gallery modes are demonstrated in a semiconductor microdisk laser cavity of subwavelength proportions. A metal layer is deposited on top of the semiconductor microdisk, the radius of which is systematically varied to enable mode hy ... [Appl. Phys. Lett. 95, 201114 (2009)] published Fri Nov 20, 2009.
Spectrally resolved confocal microscopy for laser mode imaging and beam characteristic investigations
W. Brezna and J. Smoliner
In this letter, confocal optical microscopy is used to investigate the intensity patterns of an infrared vertical cavity surface emitting laser in three dimensions with high spectral resolution. The measurements were performed between the near field (Fresnel) regime and the far field (Fraunhofer) re ... [Appl. Phys. Lett. 95, 201118 (2009)] published Fri Nov 20, 2009.
Control of free space propagation of Airy beams generated by quadratic nonlinear photonic crystals
Ido Dolev, Tal Ellenbogen, Noa Voloch-Bloch, and Ady Arie
We present experimentally the control of free space propagation of an Airy beam. This beam is generated by a nonlinear wave mixing process in an asymmetrically poled nonlinear photonic crystal. Changing the quasi-phase matching conditions, e.g., the crystal temperature or pump wavelength, alters the ... [Appl. Phys. Lett. 95, 201112 (2009)] published Fri Nov 20, 2009.
Manipulating stimulated coherent anti-Stokes Raman spectroscopy signals by broad-band and narrow-band pulses
Saar Rahav, Oleksiy Roslyak, and Shaul Mukamel
A transition-amplitude based representation of heterodyne detected coherent anti-Stokes Raman signals is used to separate them into a parametric component that involves no change in the material and dissipative processes associated with various transitions between states. Qualitatively different con ... [J. Chem. Phys. 131, 194510 (2009)] published Fri Nov 20, 2009.
Electric and Magnetic Dipole Coupling in Near-Infrared Split-Ring Metamaterial Arrays
Ivana Sersic, Martin Frimmer, Ewold Verhagen, and A. Femius Koenderink
We present experimental observations of strong electric and magnetic interactions between split ring resonators (SRRs) in metamaterials. We fabricated near-infrared planar metamaterials with different inter-SRR spacings along different directions. Our transmission measurements show blueshifts and re ... [Phys. Rev. Lett. 103, 213902 (2009)] published Fri Nov 20, 2009.
High-speed measurement of foot shape based on multiple-laser-plane triangulation
Matija Jezersek and Janez Mozina
Optical three-dimensional shape measurement of live objects is becoming an important developing and research tool because of its nonintrusive nature and high measuring speed. The current methods are reaching truly high speed in one view configuration, but in the case of the entire object shape measu ... [Opt. Eng. 48, 113604 (2009)] published Fri Nov 20, 2009.
A compact interferometric sensor design using three waveguide coupling
K. C. Vernon, D. E. Gomez, and T. J. Davis
The use of metal stripes for the guiding of plasmons is a well established technique for the infrared regime and has resulted in the development of a myriad of passive optical components and sensing devices. However, the plasmons suffer from large losses around sharp bends, making the compact design ... [J. Appl. Phys. 106, 104306 (2009)] published Thu Nov 19, 2009.
Relaxation oscillations in long-pulsed random lasers
Karen L. van der Molen, Allard P. Mosk, and Ad Lagendijk
We have measured the evolution of the intensity emitted by a random laser during a pump pulse that is comparable in duration to the spontaneous emission decay time. The time traces of our random laser, consisting of titanium dioxide particles and sulforhodamine B dye, show clear relaxation oscillati ... [Phys. Rev. A 80, 055803 (2009)] published Thu Nov 19, 2009.
Exposure fusion based on steerable pyramid for displaying high dynamic range scenes
Jinhua Wang, De Xu, and Bing Li
Currently, most exposure fusion algorithms are put forward on the assumption that the source images are aligned prior to fusion. As a result, some artifacts, such as haloing, may be caused due to the slight misalignment in the source images. In order to reduce the influence induced by the misalignme ... [Opt. Eng. 48, 117003 (2009)] published Thu Nov 19, 2009.
Nonlinear optical effects during femtosecond photodisruption
Milan P. Poudel and Jinhai Chen
Several nonlinear effects (i.e., continuum generation, self-focusing, and material damage) were studied during femtosecond photodisruption. Numerical aperture dependence of white-light continuum generation and material damage were determined and a relation between the two effects was shown. We showe ... [Opt. Eng. 48, 114302 (2009)] published Thu Nov 19, 2009.
Terahertz lasing from silicon by infrared Raman scattering on bismuth centers
S. G. Pavlov, U. Bottger, R. Eichholz, N. V. Abrosimov, H. Riemann et al.
Stimulated emission at terahertz frequencies (4.55.8 THz) has been realized by electronic Raman scattering of infrared radiation on bismuth donor centers in silicon at low temperatures. The Stokes shift of the observed laser emission is 40.53 meV which corresponds to the bismuth intracenter transiti ... [Appl. Phys. Lett. 95, 201110 (2009)] published Wed Nov 18, 2009.
Influence of C morphology on high-order harmonic generation enhancement in fullerene-containing plasma
R. A. Ganeev, H. Singhal, P. A. Naik, J. A. Chakera, A. K. Srivastava et al.
The morphologies of the fullerene targets and the ablated fullerenes to determine the optimal conditions of excitation of the C-containing targets have been analyzed. The optimization of fullerene-containing plasma conditions allowed the enhanced harmonic generation in these plasmas using laser radi ... [J. Appl. Phys. 106, 103103 (2009)] published Wed Nov 18, 2009.
Electro-optic polymer prism beam deflector
Wei-Chih Wang, Jingdong Luo, and Alex K. Y. Jen
We report on an optical beam deflector capable of achieving a large beam deflection using a planar thermoplastic-based electro-optic (EO) polymer prism. By optimizing the prism's geometry, relative position, and incident angle of the input beam, the device shows that a large deflection angle can be ... [Opt. Eng. 48, 114601 (2009)] published Wed Nov 18, 2009.
Optical probes of orientation-patterned ZnSe quasi-phase-matched devices
Gary S. Kanner, Michael L. Marable, Narsingh B. Singh, Andre Berghmans, David Kahler et al.
Orientation-patterned zinc selenide (OPZnSe) is a unique quasi-phase-matched nonlinear optical material for enabling frequency conversion from visible to long-wave infrared wavelengths. We have fabricated and tested OPZnSe devices over a wide spectral range. Single-crystal OPZnSe films of greater th ... [Opt. Eng. 48, 114201 (2009)] published Wed Nov 18, 2009.
Polarization phase-shifting Fizeau interferometer with a cyclic path optical configuration
Sanjib Chatterjee and Y. Pavan Kumar
A new technique, using a cyclic path optical configuration, for generating two coherent, virtual point sources at the back focal plane of a corrected telescope objective, for producing a pair of mutually tilted collimated beams with linear orthogonal polarizations in a Fizeau interferometer cavity i ... [Opt. Eng. 48, 115601 (2009)] published Wed Nov 18, 2009.
Novel wide viewing liquid crystal display with improved off-axis image quality in a twisted nematic configuration
Seongmo Hwang, Jeehong Min, Moon-Gyu Lee, Kyumin Choe, Hwan-Young Choi et al.
We developed a novel twisted nematic (TN) liquid crystal display (LCD) having wide viewing angle characteristics through the reduction of the residual liquid crystal phase retardation at oblique angles using an embedded diffusing unit. Compared to a conventional TN panel, this embedded approach prov ... [Opt. Eng. 48, 114001 (2009)] published Wed Nov 18, 2009.
190 nm excimer laser drilling of glass slices: Dependence of drilling rate and via hole shape on the diameter of the via hole
K. H. Chen, Wenhsing Wu, Byung Hwan Chu, C. F. Lo, Jenshan Lin et al.
The authors have investigated the effect of the via hole diameter on the laser drilling rate of glass as well as the shape of the drilled via holes. An ArF based 193 nm UV excimer laser was used in this study. The via holes with a diameter of 120 [mu]m showed a 7.5 degrees 9 degrees angled, taper ... [J. Vac. Sci. Technol. B 27, L42 (2009)] published Wed Nov 18, 2009.
She et al. Reply:
Weilong She, Jianhui Yu, and Raohui Feng
A Reply to the Comment by Iver Brevik. ... [Phys. Rev. Lett. 103, 219302 (2009)] published Wed Nov 18, 2009.
Gently Modulating Optomechanical Systems
A. Mari and J. Eisert
We introduce a framework of optomechanical systems that are driven with a mildly amplitude-modulated light field, but that are not subject to classical feedback or squeezed input light. We find that in such a system one can achieve large degrees of squeezing of a mechanical micromirrorsignifying qua ... [Phys. Rev. Lett. 103, 213603 (2009)] published Wed Nov 18, 2009.
Comment on Observation of a Push Force on the End Face of a Nanometer Silica Filament Exerted by Outgoing Light
Iver Brevik
A Comment on the Letter by Weilong She, Jianhui Yu, and Raohui Feng, [Phys. Rev. Lett. 101, 243601 (2008)]. The authors of the Letter offer a Reply. ... [Phys. Rev. Lett. 103, 219301 (2009)] published Wed Nov 18, 2009.
Experimental demonstration of a nonmagnetic metamaterial cloak at microwave frequencies
Boubacar Kante, Dylan Germain, and Andre de Lustrac
Metamaterials have paved the way to unprecedented control of the electromagnetic field. The conjunction with space coordinate transformation has led to a relativity inspired approach for the control of light propagation. Invisibility cloak is the most fascinating proposed device. However, the realiz ... [Phys. Rev. B 80, 201104 (2009)] published Tue Nov 17, 2009.
Propagation of light pulses in a fast-light medium: Interplay between gain and dispersion
T. Crouzil and M. A. Bouchene
We consider here the situation of a Gaussian pulse that probes a medium exhibiting two close resonance lines. We study the spatial behavior of the light pulse and emphasize some overlooked features. Moreover, for long pulses and a fast-light medium, we show that the spatial distortion of the pulse d ... [Phys. Rev. A 80, 055802 (2009)] published Tue Nov 17, 2009.
Non-Markovian analysis of the phase-damped Jaynes-Cummings model in the presence of a classical homogeneous gravitational field
M. Mohammadi
In this paper, the non-Markovian dissipative dynamics of the phase-damped Jaynes-Cummings model in the presence of a classical homogeneous gravitational field will be analyzed. The model consists of a moving two-level atom simultaneously exposed to the gravitational field and a single-mode traveling ... [Phys. Rev. A 80, 053823 (2009)] published Tue Nov 17, 2009.
Spin Manipulation Using the Light-Shift Effect in Rubidium Atoms
T. Moriyasu, D. Nomoto, Y. Koyama, Y. Fukuda, and T. Kohmoto
Optical manipulation of spin coherence in rubidium atoms is studied. The effect of off-resonant and circularly polarized light on optically induced magnetization is investigated. The change in precession frequency caused by the light-shift effect is verified. Absorption-free phase control of spin pr ... [Phys. Rev. Lett. 103, 213602 (2009)] published Tue Nov 17, 2009.
Extended depth of focus in a particle field measurement using a single-shot digital hologram
Wen Chen, Chenggen Quan, and Cho Jui Tay
We propose a method to extend the depth of focus in a particle field measurement using a single-shot digital hologram. A focal plane is obtained for each pixel based on an entropy method, and a depth map is subsequently extracted. A synthesized extended focused image is determined correspondingly us ... [Appl. Phys. Lett. 95, 201103 (2009)] published Mon Nov 16, 2009.
Origins of performance in fiber-based organic photovoltaics
Yuan Li, Wei Zhou, Dan Xue, Jiwen Liu, Eric D. Peterson et al.
Using ray tracing and optical path iteration, we present a mathematical model for light transmission, absorption, and loss in fiber-based organic photovoltaics. Simulations based on this model give an optimum incident angle, position, and an optimum aspect ratio in terms of other parameters of the f ... [Appl. Phys. Lett. 95, 203503 (2009)] published Mon Nov 16, 2009.
Optical nanorod antennas as dispersive one-dimensional FabryPerot resonators for surface plasmons
Ertugrul Cubukcu and Federico Capasso
Resonant optical nanoantennas exhibit a different length scaling due to the surface plasmons compared to their radio frequency counterparts. In this letter, we address this difference by calculating the wavelength-dependent effective mode index n for a cylindrical one-dimensional gold nanowire waveg ... [Appl. Phys. Lett. 95, 201101 (2009)] published Mon Nov 16, 2009.
Exciton polaritons in two-dimensional photonic crystals
D. Bajoni, D. Gerace, M. Galli, J. Bloch, R. Braive et al.
Experimental evidence of strong coupling between excitons confined in a quantum well and the photonic modes of a two-dimensional dielectric lattice is reported. Both resonant scattering and photoluminescence spectra at low temperature show the anticrossing of the polariton branches, fingerprint of s ... [Phys. Rev. B 80, 201308 (2009)] published Mon Nov 16, 2009.