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Lasers — devices that deliver beams of highly organized light — are so deeply integrated into modern technology that their basic operations would seem well understood. CD players, medical diagnostics ...
Lasers — devices that deliver beams of highly organized light — are so deeply integrated into modern technology that their basic operations would seem well understood. CD players, medical diagnostics ...
We present a theoretical analysis of the propagation of light pulses through a medium of four-level atoms, with two strong pump fields and a weak signal field in an N-scheme arrangement. We show that ...
We have explored through numerical simulations the amplification of laser pulses in nonlinear fiber Bragg gratings with gain and normal dispersion. The distortion of the temporal intensity profile cau...
In the framework of the Keldysh technique, we formulate the nonlinear sigma model for disordered optical media with linear absorption or gain. The effective action for fluctuations of the matrix field...
We discuss a class of lasing modes created by a spatially inhomogeneous gain pro le. These lasing modes are \extra modes", in addition to, and very di erent from, conventional lasing modes,which arise...
Employing an ensemble Monte Carlo transport simulation, we self-consistently analyze the spectral gain for different THz quantum cascade laser structures, considering bound-to-continuum as well as res...
The lasing operation of a ZnO planar microcavity under optical pumping is demonstrated from T=80 K to 300 K. At the laser threshold, the cavity switches from the strong coupling to the weak coupling r...
We analyze the dynamics of Free Electron Laser (FEL) devices, operating with a bunched beam exhibiting a longitudinal phase space correlation. We show that the presence of an energy-position correlat...
We consider the dynamical degenerate four-wave mixing (FWM) model in a cubic nonlinear medium including both the time relaxation of the induced nonlinearity and the nonlocal coupling. The initial ten-...
In high gain harmonic generation (HGHG) free electron laser (FEL), with the right choice of parameters of the modulator undulator, the dispersive section and the seed laser, one may make the spatial b...
2006Vol.45No.6pp.1102-1106DOI: Nonlinear Absorption-Gain Response and Population Dynamics in a Laser-Driven Four-Level Dense Atomic System LI Jia-Hua, LIU Ji-Bing, LUO Jin-Ming, a...
期刊信息 篇名 Noise-free,high-gain signal beam amplification using beam fanning in a photorefractive KNbO3:Fe crystal 语种 英文 撰写或编译 撰写 作者 Jingjun Xu,Zhang Guangyin et al 第一作者单位 刊物名称 Optics Communication 页面 19...
期刊信息 篇名 Optically Activated Charge Domain Model for High-gain GaAs Photoconductive 语种 英文 撰写或编译 撰写 作者 施卫 第一作者单位 西安理工大学 刊物名称 半导体学报 (EI收录) 页面 出版日期 2001年 月 日 文章标识(ISSN) 0253-4177 相关项目 大功率超短电脉冲(ps)光电导开关微波源...

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