摘要
锁模固体激光器的激光输出脉冲的频率和强度随激光器的噪声出现非常大的波动,限制了激光器系统在许多方面的应用。理论上分析了被动锁模Cr4+∶YAG激光器的噪声形式和产生原因,从被动锁模Cr4+∶YAG激光器的脉冲传播方程出发,得到了带噪声的非线性薛定谔方程,依据这个方程的类孤子解,推导出被动锁模Cr4+∶YAG激光器腔内在噪声影响下脉冲的振幅和相位波动的线性扰动方程,对这个方程作了逼近解,得出振幅和相位波动的表达式和相应的噪声谱,可对实际的被动锁模Cr4+∶YAG激光器输出脉冲的噪声进行控制。
A large fluctuation of the frequency and the intensity exists in the mode-locked solid-state laser by the laser noise, and the applications of the mode-locked solid-state laser in much aspect are limited. The form and the cause of the noise in the mode-locked solid-state laser are analyzed in theory. The non-linear Schrodinger equation including noise is obtained from the pulse propagation equation of the passive mode-locked Cr^4＋： YAG laser. The linear perturbation equations of the pulse amplitude and phase have been deduced in the passive mode-locked Cr^4＋： YAG laser in the noise through the like-soliton equation. In the approximation solution , the expression of the amplitude and phase fluctuations and the noise spectra are gained. The noise of the output pulse in the passive modelocked Cr^4＋ ：YAG laser may be controlled.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2005年第9期1207-1210,共4页
Chinese Journal of Lasers
基金
自然科学基金(60378011)资助项目
