摘要
对全固化激光器输出激光的强度噪声谱进行了理论分析与实验测定 ,设计了由三镜环行腔构成的模清洁器 ,利用它过滤高频噪声的特性使单频Nd∶YVO4 激光器的强度噪声降低 ,通过模清洁器之前激光在 30MHz才能达到散粒噪声极限 ,通过模清洁器之后在 7MHz处便达到散粒噪声基准。设计中兼顾了窄线宽与透过效率两方面要求 ,模清洁器的透过效率为 70 %。
The mode cleaner consisting of a ring cavity with three mirrors was designed based on the theoretical analyses and experimental measurements to the intensity noise spectra of an all solid state laser. The intensity noise of a homemade single frequency Nd∶YVO 4 laser has been significantly decreased by using the mode cleaner with the characteristic of filtering high frequency noise. The noise frequency to reach the shot noise limit has been reduced to 7 MHz from 30 MHz without the mode cleaner. In design, the requirements of both narrow bandwidth and higher transitivity for the cavity were considered compatibly. The transitivity of mode cleaner is 70%.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2001年第3期197-200,共4页
Chinese Journal of Lasers
基金
国家自然科学基金! (No .196 740 34
No.6 98370 10 )
山西省自然科学基金
