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半导体光子学与技术：英文版

Nonlinear Propagation of Coupling Optical Pulse under Compton Scattering in Laser Medium

Hao, Dong-shan, Zhang, Xiao-fu

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

在认为克尔是非线性的效果以后，在放大媒介的激光组织主人的速度分散和活跃粒子的获得分发，描述联合的繁殖的一个基本方程在多光子下面的光脉搏在放大媒介的激光散布的非线性的康普顿被推出了。而且，当它的中央频率与放大媒介的激光的获得山峰频率与一致时，在放大媒介的激光联合脉搏的微微秒级的 super-Gaussian 的侧面和力量光谱被讨论了。

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Abstract We theoretically investigated the sub-luminal and super-luminal light propagation by introducing compton scattering and Kerr non-linear effects to a four level atomic system. Slow light propagation is observed at a group index of 3918 in the transparency region. The slow light propagation is tuned to fast light propagation at group index 0.2, using compton scattering angle of $$\varphi =\pi /6$$ φ = π / 6 . The surperluminality is further enhanced with compton scattering angle at the resonance frequency. Under the Kerr nonlinearity, the slow light propagation at a group index of 3918 is enhanced to fast light propagation at group index of $$2\times 10^6$$ 2 × 10 6 at the resonance frequency. The group index is reduced to $$6.56281\times 10^{-5}$$ 6.56281 × 10 - 5 in the presence of both Kerr non-linearity and compton scattering. In the presence of compton scattering, the Phase shift at $$\pi /2$$ π / 2 without Kerr nonlinearity is $$7\times 10^{-8}$$ 7 × 10 - 8 radian and with Kerr nonlinearity its value is $$1.7\times 10^{-9}$$ 1.7 × 10 - 9 radian at resonance frequency. This demonstrate that introducing Kerr effect and compton scattering lead to significant modifications in the phase shift.

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Nonlinear radiation reaction, superradiance, and coherent optical pulse propagation

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在认为克尔是非线性的效果以后，在放大媒介的激光组织主人的速度分散和活跃粒子的获得分发，描述联合的繁殖的一个基本方程在多光子下面的光脉搏在放大媒介的激光散布的非线性的康普顿被推出了。而且，当它的中央频率与放大媒介的激光的获得山峰频率与一致时，在放大媒介的激光联合脉搏的微微秒级的 super-Gaussian 的侧面和力量光谱被讨论了。
After considering Kerr nonlinear effect, group velocity dispersion of host and gain distribution of active particle in laser amplifying medium, a basic equation describing propagation of the coupling optical pulse under the multi-photon nonlinear Compton scattering in the laser amplifying medium has been deduced. Besides, the profile and power spectrum of a picosecond-level super-Gaussian coupling pulse in the laser amplifying medium have been discussed when its central frequency coincides with the gain peak frequency of the laser amplifying medium.
Abstract We theoretically investigated the sub-luminal and super-luminal light propagation by introducing compton scattering and Kerr non-linear effects to a four level atomic system. Slow light propagation is observed at a group index of 3918 in the transparency region. The slow light propagation is tuned to fast light propagation at group index 0.2, using compton scattering angle of φ=π/6\varphi =\pi /6φ=π/6 φ = π / 6 . The surperluminality is further enhanced with compton scattering angle at the resonance frequency. Under the Kerr nonlinearity, the slow light propagation at a group index of 3918 is enhanced to fast light propagation at group index of 2×1062\times 10^62×106 2 × 10 6 at the resonance frequency. The group index is reduced to 6.56281×10−56.56281\times 10^{-5}6.56281×10−5 6.56281 × 10 - 5 in the presence of both Kerr non-linearity and compton scattering. In the presence of compton scattering, the Phase shift at π/2\pi /2π/2 π / 2 without Kerr nonlinearity is 7×10−87\times 10^{-8}7×10−8 7 × 10 - 8 radian and with Kerr nonlinearity its value is 1.7×10−91.7\times 10^{-9}1.7×10−9 1.7 × 10 - 9 radian at resonance frequency. This demonstrate that introducing Kerr effect and compton scattering lead to significant modifications in the phase shift.