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Journal of the Optical Society of America B

Journal of the Optical Society of America B

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August


(LIM2014) Excitation and Relaxation Dynamics in Dielectrics Irradiated by an Intense Ultrashort Laser Pulse

  • Nils Brouwer and Barbel Rethfeld
  • received 06/10/2014; accepted 08/28/2014; posted 08/28/2014; Doc. ID 213659
  • [full text: PDF (519) KB)]
  • Abstract: When transparent dielectrics are irradiated by an intense, ultrashort laser pulse, the electron density in the conduction band is increased tremendously. Simultaneously, valence band states become unoccupied and the electron-phonon coupling strength is increased. In this paper, we present our work on modeling the ultrafast non-equilibrium dynamics of laser-excited transparent dielectrics with Boltzmann collision integrals. We track the distribution function of conduction and valence band electrons and discuss the effects of Auger recombination in relation to impact ionization and multiphoton/tunnel ionization on the femtosecond timescale. Finally, we investigate the electron-phonon coupling strength in highly excited dielectrics and calculate the electron- phonon coupling parameter for silicon dioxide-like material.

Keywords (OCIS):

  • (140.3440) Lasers and laser optics : Laser-induced breakdown
  • (190.4180) Nonlinear optics : Multiphoton processes
  • (320.2250) Ultrafast optics : Femtosecond phenomena
  • (320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Spectral compression and modulation of second harmonic generation by Fresnel-inspired binary phase shaping

  • Baihong Li, Yonggang Xu, Haifei Zhu, Qianlan Lin, Lan An, Fukun Lin, and Yongfang Li
  • received 06/18/2014; accepted 08/28/2014; posted 08/28/2014; Doc. ID 214139
  • [full text: PDF (482) KB)]
  • Abstract: The second harmonic generation (SHG) process is investigated theoretically using the quantum mechanics method of coherent control. Based on the extremum conditions for the SHG intensity at the center frequency, a Fresnel-inspired binary phase shaping scheme is proposed for tailoring the fundamental pulse. The SHG spectrum can be compressed into a narrowband signal with lower background by modulating the relative phases between the frequency components within the fundamental pulse, inducing constructive interference at the center frequency and destructive interference elsewhere. Multi-peak second harmonic signals can also be obtained by properly modulating various interference pathways. These results have potential applications in high resolution nonlinear spectroscopy, microscopy and information coding.

Keywords (OCIS):

  • (190.2620) Nonlinear optics : Harmonic generation and mixing
  • (190.7110) Nonlinear optics : Ultrafast nonlinear optics
  • (320.5540) Ultrafast optics : Pulse shaping

Deterministic implementation of optimal symmetric quantum cloning with nitrogen-vacancy centers coupled to a whispering-gallery microresonator

  • Zhao Jin, Yan-Qiang Ji, Ai-Dong Zhu, Hong-Fu Wang, and Shou Zhang
  • received 06/26/2014; accepted 08/27/2014; posted 08/28/2014; Doc. ID 214834
  • [full text: PDF (840) KB)]
  • Abstract: The schemes for implementing quantum cloning are proposed with the nitrogen-vacancy(N-V) centers in diamond confined in the separated microtoroidal resonators(MTRs) via single-photon input-output process and linear optics. By properly arranging and adjusting the linear optical elements to control the interaction between the photons and N-V centers, we realize quantum cloning transformations including the optimal symmetric 1 ->2 universal, phase-covariant, and 1 ->M economical phase-covariant ones. In these schemes, the photons are used as the data buses and the information is copied from one N-V center to the others. We also discuss the cloning fidelities and dissipative effects. The results show the present schemes are robust under the current experiment conditions.

Keywords (OCIS):

  • (270.5565) Quantum optics : Quantum communications
  • (270.5585) Quantum optics : Quantum information and processing

(LIM2014) Ultrafast Structural Phenomena: Theory of Phonon Frequency Changes and Simulations with CHIVES

  • Naira Grigoryan, Tobias Zier, Martin Garcia, and Eeuwe Zijlstra
  • received 06/02/2014; accepted 08/26/2014; posted 08/27/2014; Doc. ID 213030
  • [full text: PDF (697) KB)]
  • Abstract: When a femtosecond-laser pulse excites a solid it may, among other ultrafast processes, induce coherent phonons, phonon frequency changes, thermal phonon squeezing, and nonthermal melting. Using our in-house Code for Highly-excIted Valence Electron Systems (CHIVES), where laser-induced interatomic forces are computed ``on the fly' from ab initio theory, we performed molecular dynamics simulations of supercells with up to 800 atoms. For Si we found that thermal phonon squeezing precurses nonthermal melting as a function of fluence. Furthermore, our molecular dynamics trajectories showed that nonthermal melting includes a stage during which the atoms move fractionally diffusive. We also simulated femtosecond-laser-excited Ge. In addition, we explain the electronic origin of laser-induced phonon frequency redshifts and blueshifts in Mg.

Keywords (OCIS):

  • (140.3390) Lasers and laser optics : Laser materials processing
  • (160.3900) Materials : Metals
  • (160.6000) Materials : Semiconductor materials
  • (320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
  • (260.7120) Physical optics : Ultrafast phenomena

Quantum atomic lithography via cross-cavity optical Stern-Gerlach Setup

  • T. Batalhão, R. Bachelard, G. de Moraes Neto, M. de Ponte, M. Moussa, and C. Máximo
  • received 07/24/2014; accepted 08/25/2014; posted 08/26/2014; Doc. ID 217038
  • [full text: PDF (914) KB)]
  • Abstract: We present a fully quantum scheme to perform 2D atomic lithography based on a cross-cavity optical Stern-Gerlach setup: an array of two mutually orthogonal cavities crossed by an atomic beam perpendicular to their optical axes, which is made to interact with two identical modes. After deriving an analytical solution for the atomic momentum distribution, we introduce a protocol allowing us to control the atomic deflection by manipulating the amplitudes and phases of the cavity field states.

Keywords (OCIS):

  • (020.5580) Atomic and molecular physics : Quantum electrodynamics
  • (220.3740) Optical design and fabrication : Lithography
  • (270.0270) Quantum optics : Quantum optics
  • (270.6570) Quantum optics : Squeezed states
  • (020.1335) Atomic and molecular physics : Atom optics
  • (050.6624) Diffraction and gratings : Subwavelength structures

Hybrid SOI/polymer electro optical intensity modulator operating at 780 nm

  • Edgars Nitiss, Janis Busenbergs, and Martins Rutkis
  • received 05/22/2014; accepted 08/25/2014; posted 08/25/2014; Doc. ID 212416
  • [full text: PDF (585) KB)]
  • Abstract: Currently the inorganic materials prevail to be used as a nonlinear active medium for light modulation in electro optical (EO) device technology. A recent promising trend is to consider organic nonlinear optical materials for application in EO modulators due to their multiple advantages including low costs and high EO coefficients. In this paper, we proposed a new type of polymer EO modulator whose fabrication is compatible with the currently used silicon on insulator (SOI) technology. Our numerical optimization of the proposed structure demonstrates that it is theoretically possible to achieve a half-wave voltage of as low as 1.56 V for a 1 cm long modulator structure operating at 780 nm. Based on the results of the numerical calculations, we also outline the advantages and drawbacks of the design.

Keywords (OCIS):

  • (190.4360) Nonlinear optics : Nonlinear optics, devices
  • (190.4400) Nonlinear optics : Nonlinear optics, materials
  • (190.4710) Nonlinear optics : Optical nonlinearities in organic materials
  • (230.2090) Optical devices : Electro-optical devices
  • (230.4110) Optical devices : Modulators
  • (230.7380) Optical devices : Waveguides, channeled

(LIM2014)Laser-induced transfer of nanoparticles for gas-phase analysis

  • Alexander Bulgakov, Nathan Goodfriend, Oleg Nerushev, Nadezhda Bulgakova, Sergei Starinskiy, Yuri Shukhov, and Eleanor Campbell
  • received 06/02/2014; accepted 08/25/2014; posted 08/25/2014; Doc. ID 212813
  • [full text: PDF (3165) KB)]
  • Abstract: An experimental study of laser-induced forward transfer of nanoparticles from a metal-coated glass substrate is presented. Nanoparticles are efficiently removed from the substrates due to transient blister formation. A combination of mass spectrometry, AFM studies of the irradiated substrates and theoretical considerations of temperature distributions and stresses in the films during irradiation serves to provide insight into the mechanisms involved.

Keywords (OCIS):

  • (320.2250) Ultrafast optics : Femtosecond phenomena
  • (320.4240) Ultrafast optics : Nanosecond phenomena
  • (350.1820) Other areas of optics : Damage
  • (350.3390) Other areas of optics : Laser materials processing
  • (310.6845) Thin films : Thin film devices and applications

Exact Theory of Optical Transition Radiation in the Far and Near Zones

  • Ariel Nause, Egor Dyunin, Reuven Ianconescu, and Avraham Gover
  • received 07/15/2014; accepted 08/24/2014; posted 08/25/2014; Doc. ID 216885
  • [full text: PDF (2604) KB)]
  • Abstract: We present an exact solution of the complex field of Transition Radiation (TR) emitted by an electron incident on a conductive screen. The solution is valid in all space. In the reactive near zone it replicates the Coulomb fields of the electron and its image charge and their evolvement into radiation fields after termination of the charges current at the screen. Using a general formulation for radiation diffraction from a current line, we derive diffraction integral expressions in the reactive near-zone, the Fresnel near-zone and the Fraunhofer far-zone in analogy to diffraction from a planar radiation source. The derived exact complex field expressions can be useful for describing Coherent Optical TR (COTR) from a beam of phase-correlated charge particles in the near field and in the imaging plane of the screen.

Keywords (OCIS):

  • (000.6800) General : Theoretical physics
  • (030.1640) Coherence and statistical optics : Coherence
  • (260.1960) Physical optics : Diffraction theory

Dispersive and scattering properties of multilayer arrays made of plasmonic nanoparticles

  • Giuseppe D'Aguanno and Nadia Mattiucci
  • received 07/15/2014; accepted 08/24/2014; posted 08/25/2014; Doc. ID 216906
  • [full text: PDF (1958) KB)]
  • Abstract: We analytically study, in the homogenization regime, the dispersive and transmission properties of periodic multilayer arrays of subwalength metal particles embedded in a dielectric medium. Far from the intrinsic plasmonic resonance of the individual nanoparticles, these structures behave similarly to conventional Bragg reflectors. At the plasmonic resonance, a different type of Bragg gap is formed with peculiar dispersive and tunneling properties.

Keywords (OCIS):

  • (230.1480) Optical devices : Bragg reflectors
  • (160.4236) Materials : Nanomaterials
  • (250.5403) Optoelectronics : Plasmonics
  • (050.6624) Diffraction and gratings : Subwavelength structures

Electron excitation in thin metal films due to the magnetic field of ultrashort laser pulses

  • A. Lugovskoy and I. Bray
  • received 05/14/2014; accepted 08/24/2014; posted 08/26/2014; Doc. ID 211828
  • [full text: PDF (651) KB)]
  • Abstract: The behaviour of the conduction-band electrons in a metal film subjected to the action of an ultrashort laser pulse at normal incidence is analysed quantum-mechanically. We consider the case where the pulse duration is shorter that the electron mean free time. It is shown for the first time that electrons occupying low quantum-well states can be excited resonantly to the higher-energy quantum-well levels due to the action of the magnetic field of the wave. The excitation probability due to this mechanism can be even larger than the excitation probability due to the inverse bremsstrahlung in electron-phonon collisions.

Keywords (OCIS):

  • (310.0310) Thin films : Thin films
  • (320.7120) Ultrafast optics : Ultrafast phenomena
  • (320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Comparison of Gain and Phase Recovery Dynamics Among Optical Pumping Schemes in Quantum-Dot Semiconductor Optical Amplifiers

  • Jungho Kim and Bong-Ahn Yu
  • received 05/30/2014; accepted 08/22/2014; posted 08/22/2014; Doc. ID 213088
  • [full text: PDF (1576) KB)]
  • Abstract: We numerically compare the gain and phase recovery acceleration of quantum-dot (QD) semiconductor optical amplifiers (SOAs) caused by four optical pumping schemes, which are the single-color optical pumping tune to the quantum-well (QW) carrier reservoir, the QD excited state (ES) ensembles, and the QD ground state (GS) ensembles together with the multi-color optical pumping tuned to both the GS and the ES ensembles of QDs. The temporal responses of both the gain and phase recoveries caused by the four optical pumping schemes are calculated and compared by solving 1088 coupled rate equations at the same pumping conditions. Among the four optical pumping schemes, the single-color optical pumping to the ES ensemble shows the fastest response of the gain and phase recovery. This results from the large carrier occupation ratio at the GS and the ES ensembles and the high modal gain at the pumping wavelength, which facilitates the reduction of the carrier recovery time within the GS and the ES ensembles due to the increased stimulated recombination rate caused by the optical pumping beam.

Keywords (OCIS):

  • (230.5590) Optical devices : Quantum-well, -wire and -dot devices
  • (250.5980) Optoelectronics : Semiconductor optical amplifiers
  • (320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Raman fiber laser pumped high power, efficient Ho-doped fiber laser

  • Xiong Wang, Pu Zhou, Yu Miao, Hanwei Zhang, Hu Xiao, Xiaolin Wang, and Zejin Liu
  • received 07/01/2014; accepted 08/22/2014; posted 08/25/2014; Doc. ID 215042
  • [full text: PDF (422) KB)]
  • Abstract: We demonstrate a high power and efficient Ho-doped fiber laser (HDFL) employing a high power 1150 nm Raman fiber laser (RFL) as pump source. The 1150 nm RFL provided 110 W pump power and the output power of HDFL reached 42 W with slope efficiency of 0.37. The lasing wavelength covers from 2046.8 nm to 2049.5 nm with optical signal-to-noise ratio more than 30 dB. This is the first demonstration on a high power HDFL near 2 μm pumped by a 1150 nm RFL and the highest output power achieved at this pump band. Higher output power can be realized by launching more pump power into the HDFL and employing cladding pump scheme.

Keywords (OCIS):

  • (140.3070) Lasers and laser optics : Infrared and far-infrared lasers
  • (140.3410) Lasers and laser optics : Laser resonators
  • (140.3510) Lasers and laser optics : Lasers, fiber
  • (140.3550) Lasers and laser optics : Lasers, Raman

(LIM2014)Pulsed laser modification of transparent dielectrics: What can be foreseen and predicted in numerical experiments?

  • Nadezhda Bulgakova, Vladimir Zhukov, Yuri Meshcheryakov, Laura Gemini, Jan Braier, Danijela Rostohar, and Tomas Mocek
  • received 06/02/2014; accepted 08/20/2014; posted 08/21/2014; Doc. ID 213243
  • [full text: PDF (2733) KB)]
  • Abstract: Numerical simulations based on Maxwell’s equations have been performed for gaining deep insight into the processes governing laser light absorption in transparent dielectrics in the regimes typical for laser direct writing of various optical structures inside bulk glasses such as waveguides, nanoplanes, and voids. Numerical simulations have been performed for fused silica glass irradiated by femtosecond laser pulses at 800 nm wavelength. The geometry of laser energy absorption is compared for two pulse durations and energies from 0.1 to 1 μJ. The effect of numerical aperture of the laser energy deposition is studied. The double pulse irradiation has been modeled to get insight into “exciton-seeded multiphoton ionization” [Phys. Rev. B 81, 212301 (2010)]. Furthermore, several consecutive laser pulses have been modeled to gain a better understanding of a qualitative tendency of memory effects related to defect accumulation. Such features of laser energy coupling into the bulk glass have been revealed as asymmetry of absorption for the cylindrically-symmetric linearly-polarized beam and formation of a defect shield developing in multipulse irradiation regimes.

Keywords (OCIS):

  • (140.3390) Lasers and laser optics : Laser materials processing
  • (140.3440) Lasers and laser optics : Laser-induced breakdown
  • (160.2750) Materials : Glass and other amorphous materials
  • (320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Terahertz generation with tilted-front laser pulses in contact-grating scheme

  • Michael Bakunov and Sergey Bodrov
  • received 07/22/2014; accepted 08/19/2014; posted 08/28/2014; Doc. ID 217452
  • [full text: PDF (859) KB)]
  • Abstract: We present a detailed analysis of terahertz generation with tilted-front optical pulses in a scheme, where the pulse-front tilt is introduced by transmitting the laser pulse through a diffraction grating placed on the boundary of an electro-optic crystal. The analysis accounts for a finite transverse size of the pump laser beam, initial chirp of the laser pulse, and distortion of the tilted-front pulse in the crystal due to the angular and material dispersions. Two situations of practical interest are explored -- LiNbO$_3$ pumped at 0.8 $\mu$m wavelength and GaAs pumped at 1.8 $\mu$m. Recommendations on increasing the efficiency of the optical-to-terahertz conversion, optimizing the generated terahertz spectrum, and improving the quality of the terahertz beam are given.

Keywords (OCIS):

  • (190.7110) Nonlinear optics : Ultrafast nonlinear optics
  • (260.3090) Physical optics : Infrared, far

Velocity selective bi-polarization spectroscopy for laser cooling of metastable Krypton atoms

  • Y. Kale, V. Tiwari, S. Singh, S. R. Mishra, and H. Rawat
  • received 05/28/2014; accepted 08/18/2014; posted 08/27/2014; Doc. ID 212986
  • [full text: PDF (748) KB)]
  • Abstract: We report a velocity selective bi-polarization spectroscopy (VS-BPS) technique to generate a background-free, dispersion-like reference signal which is tunable over a wide range of frequency. In this technique, a pair of linearly polarized weak probe beams passing through a gas cell of metastable Krypton (Kr*) atoms, overlaps with a pair of counter-propagating circularly polarized strong pump beams derived from an independently tunable control laser. The polarization spectroscopy signals from the two probe beams, after subtraction, result in VS-BPS signal. The spectral shifting in VS-BPS signal can be achieved by tuning the frequency of the control laser. The dependence of the amplitude and slope of the VS-BPS signal on the RF power used for excitation of Kr atoms in the gas cell and on the power of pump beams has been studied. The frequency stability of a diode laser locked with VS-BPS signal has been found to be better than the frequency stability of the laser locked with a saturated absorption spectroscopy (SAS) signal. The VS-BPS signal is finally used for stabilization and tuning of the cooling laser frequency for a magneto-optical trap (MOT) for Kr* atoms.

Keywords (OCIS):

  • (140.2020) Lasers and laser optics : Diode lasers
  • (300.6210) Spectroscopy : Spectroscopy, atomic
  • (300.6260) Spectroscopy : Spectroscopy, diode lasers
  • (300.6420) Spectroscopy : Spectroscopy, nonlinear
  • (140.3425) Lasers and laser optics : Laser stabilization
  • (020.3320) Atomic and molecular physics : Laser cooling

Low-light-level Ladder-type Electromagnetically Induced Transparency and Two-photon Absorption

  • Zong-Syun He, Jing-Yuan Su, Hong-Ren Chen, Wei-Fu Chen, Meng-Huang Sie, Jyun-Yan Ye, and Chin-Chun Tsai
  • received 05/26/2014; accepted 08/18/2014; posted 08/19/2014; Doc. ID 212711
  • [full text: PDF (402) KB)]
  • Abstract: Ladder-type electromagnetically induced transparency (EIT) and two photon absorption (TPA) under a low-light-level of probe regime (0.2 W/cm² (0.06Γ₂)) and a weak coupling power for cesium atom at room temperature are investigated. Reduction of the fluorescence due to TPA in a three-level system via EIT interference is clearly observed for the first time, while the probe Rabi frequency is reduced to about 0.3 MHz to avoid the affect by the vicinity of hyperfine state. The transparency ratio of EIT derived from the reduction of fluorescence is about 25%. Additionally, the linewidth below Γ (Γ₂+Γ₃) is obtained even thought the coupling Rabi frequency is as large as 1.9Γ (14.36 MHz). By solving the optical Bloch equations for the steady states, the numerical simulation results are in a good agreement with both EIT and TPA. According to the tendency of our investigations, subnatural linewidth is still achievable as Ωc reaching 2.5Γ (18.5 MHz).

Keywords (OCIS):

  • (270.1670) Quantum optics : Coherent optical effects
  • (290.3700) Scattering : Linewidth
  • (300.6420) Spectroscopy : Spectroscopy, nonlinear

The influence of guided acoustic wave Brillouin scattering on excess noise in fiber-based continuous variable quantum key distribution

  • Yongmin Li, Ning Wang, Xuyang Wang, and Zengliang Bai
  • received 06/23/2014; accepted 08/18/2014; posted 08/19/2014; Doc. ID 214626
  • [full text: PDF (575) KB)]
  • Abstract: We experimentally study the depolarized guided acoustic wave Brillouin scattering in a long-distance telecom single mode fiber (SMF-28e). It is shown that such scattering process can introduce excess noise and further degrade the performance of fiber-based continuous variable quantum key distribution (CVQKD) system where a fiber is utilized as the quantum channel. Based on the experimental results we deduce a lower bound for the extinction ratio of the pulsed light in time-multiplexing CVQKD protocol.

Keywords (OCIS):

  • (060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
  • (270.5565) Quantum optics : Quantum communications
  • (270.5568) Quantum optics : Quantum cryptography

Efficient Electromagnetically Induced Phase Grating via Quantum Interference in a Four-Level N-Type Atomic System

  • Tayebeh Naseri and Rasoul Sadighi-Bonabi
  • received 07/09/2014; accepted 08/17/2014; posted 08/18/2014; Doc. ID 216553
  • [full text: PDF (561) KB)]
  • Abstract: Electromagnetically induced phase grating controlled by spontaneous generated coherence (SGC) in a four-level N-type atomic system is studied. The results indicate that the diffraction efficiency of phase grating is dramatically enhanced due to the existence of SGC and the diffraction efficiency up to 45% can be obtained. A novel result was considerable improving of the intensity of higher order diffractions via relative phase between applied laser fields. Furthermore, it is found that the frequency detuning of the switching and coupling fields with the corresponding atomic transition and incoherent pumping can improve the efficiency of the phase grating in the present atomic model.

Keywords (OCIS):

  • (050.0050) Diffraction and gratings : Diffraction and gratings
  • (050.1950) Diffraction and gratings : Diffraction gratings
  • (190.0190) Nonlinear optics : Nonlinear optics
  • (190.4360) Nonlinear optics : Nonlinear optics, devices

Modeling the optical Kerr effect in periodic structures by the linear Fourier Modal Method

  • Subhajit Bej, Jani Tervo, Yuri Svirko, and Jari Turunen
  • received 05/13/2014; accepted 08/17/2014; posted 08/18/2014; Doc. ID 211992
  • [full text: PDF (550) KB)]
  • Abstract: We present a numerically feasible method for rigorous modeling of crossed diffraction gratings made of isotropic materials with third-order nonlinearity. The approach is based on an iterative solution of the crossed-grating problem with linear but anisotropic materials. We also discuss how the symmetries of the effective linear permittivity tensor can be exploited to speed up the computation when one considers normal incidence of light. Several numerical experiments are performed to demonstrate the accuracy as well as the versatility of this numerical technique.

Keywords (OCIS):

  • (050.1950) Diffraction and gratings : Diffraction gratings
  • (050.1970) Diffraction and gratings : Diffractive optics
  • (190.3270) Nonlinear optics : Kerr effect
  • (050.1755) Diffraction and gratings : Computational electromagnetic methods
  • (050.5745) Diffraction and gratings : Resonance domain
  • (050.6624) Diffraction and gratings : Subwavelength structures

Compact Wavelength Demultiplexer via Photonic Crystal Multimode Resonators

  • Zhen Hu and Ya Yan Lu
  • received 05/28/2014; accepted 08/17/2014; posted 08/18/2014; Doc. ID 212996
  • [full text: PDF (1577) KB)]
  • Abstract: Wavelength demultiplexers based on photonic crystal resonators are attractive, since they may be realized in very small sizes. However, existing designs have a limitation on the size, since they all require one resonator for each wavelength and these resonators must be separated. As a possible approach to reduce the size further, we show that a single multimode resonator may be used to separate different wavelengths corresponding to the different resonant frequencies. Specifically, we propose an ultra-compact three-wavelength demultiplexer based on a single multimode resonator in a photonic crystal. The design is obtained by an efficient optimization procedure, and its property is analyzed rigorously by a numerical method, as well as approximately by the temporal coupled mode theory.

Keywords (OCIS):

  • (230.5750) Optical devices : Resonators
  • (230.5298) Optical devices : Photonic crystals
  • (130.7408) Integrated optics : Wavelength filtering devices
  • (130.3990) Integrated optics : Micro-optical devices

Articles 1 to 20 of 48 Next Page >>





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