相干反馈无序激光器中的光局域化及对Sushil Mujumdar实验的解释

提出了相干反馈无序激光器中同时存在两种光局域化,第一种是循环光散射回路使光子局域于回路,第二种是无序介质中的散射粒子使光子局域于整个增益介质,并以此阐述了相干反馈无序激光器的工作原理.关于第一种局域化,提出了较少散射粒子组成的循环光散射回路更容易激射.关于第二种光局域化,得到了增益区域为立方体时激光光子的平均寿命.在上面的基础上,较好地解释了由Sushil Mujumdar等人报告的一个新的实验现象.

Light Localization in Random Laser with Coherent Feedback and Explain on the Sushil Mujumdar''''s Experiment

The paper puts forward that there are two kinds of light localizations at same time in random laser with coherent feedback: the one is that the recurrent light scattering loop restricts photons in the loop,the another is that the scattering particles restrict photons in the entire gain medium,and on the base,it expatiates the work principle of the random laser with coherent feedback.For the first localization,it puts forward that it is easier to lasing in the loop with less particles,for the second localization,it gets the average life of the laser photon when gain region is cube.On the above base,it explains the new phenomenon which was reported by Sushil Mujumdar et al.