温度对光伏光折变晶体中高斯光束演化的影响

吉选芒; 谢世杰; 王金来; 刘劲松

温度对光伏光折变晶体中高斯光束演化的影响

1.
运城学院, 物理与电子工程系, 运城, 044000;
2.
华中科技大学光电子科学与工程学院, 武汉, 430074

作者简介: 吉选芒(1965- ),男,工学硕士,教授,从事物理教学与光折变非线性光学方面的研究工作.E-mail:jixuanmang@126.com.

基金项目:
山西省高等学校科技开发资助项目(200611042)
中图分类号: O734⁺.1

Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal

1.
Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng 044000, China;
2.
College of Optoelectronic Science and Engineering, Huanzhong University of Science and Technology, Wuhan 430074, China
CLC number: O734⁺.1

摘要: 为了得到温度对有偏压光伏光折变晶体中高斯光束演化特性的影响结果,基于暗辐射强度对温度的依赖关系,研究了不同温度下高斯光束在光伏光折变晶体中的动态演化。将高斯光束作为入射波,采用数值方法求解波传播方程,当温度是300K时,与晶体匹配的高斯光束可演化成稳定的屏蔽光伏明孤子;当温度变化较大时,高斯光束变得不稳或者发散。在失配的条件下,通过改变晶体的温度能使一不稳定的高斯光束变成一稳定的明孤子波。结果表明,这种温度增加或减少控制下的光伏光折变晶体中高斯光束演化特性的改变有望应用于温控光器件。
- 非线性光学 /
- 光折变效应 /
- 光伏光折变晶体 /
- 高斯光束 /
- 温度特性
Abstract: In order to obtain the effect of temperature on the dynamical evolution of Gaussian beam in biased photovoltaic-photorefractive crystal, the dynamical evolution of Gaussian beam in biased photovoltaic photorefractive crystal at different temperatures was investigated by taking into account the temperature dependence of dark irradiation. Taking the Gaussian beam as the input wave, the beam propagation equation was solved numerically. A matched Gaussian beam can evolve into a stable screening-photovoltaic bright soliton at temperature of 300K, whereas it will become unstable or diverge when the temperature change is large enough. Under mismatch conditions, an unstable Gaussian beam can evolve into stable screening-photovoltaic bright solitons by adjusting the crystal temperature. The result indicate that the change of the evolution of a Gaussian beam in photovoltaic-photorefractive crystal controlled by the increases or decreases of the temperature can be applied in thermo-control optical devices.
- nonlinear optics /
- photorefractive effects /
- photovoltaic-photorefractive crystal /
- Gaussian beam /
- temperature dependence

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温度对光伏光折变晶体中高斯光束演化的影响

作者简介: 吉选芒(1965- ),男,工学硕士,教授,从事物理教学与光折变非线性光学方面的研究工作.E-mail:jixuanmang@126.com.

Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal

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温度对光伏光折变晶体中高斯光束演化的影响

作者简介: 吉选芒(1965- ),男,工学硕士,教授,从事物理教学与光折变非线性光学方面的研究工作.E-mail:jixuanmang@126.com

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Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal

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温度对光伏光折变晶体中高斯光束演化的影响

作者简介: 吉选芒(1965- ),男,工学硕士,教授,从事物理教学与光折变非线性光学方面的研究工作.E-mail:jixuanmang@126.com.

Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal

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温度对光伏光折变晶体中高斯光束演化的影响

作者简介: 吉选芒(1965- ),男,工学硕士,教授,从事物理教学与光折变非线性光学方面的研究工作.E-mail:jixuanmang@126.com

English Abstract

Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal

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