摘要
以633nm 碘吸收稳定激光器作为标准,通过将待测的环形激光器与之进行拍频,建立了一套检测灵敏度很高的高精度激光频率稳定度检测系统。该系统采用宽带雪崩光电二极管接收拍频信号中的差频信号,经过信号处理后利用高精度频率计实现拍频频率的测量,试验结果表明:该系统的检测频宽可达到800 MHz,频率稳定度的测量精度达到10^(-11)量级,最小可检测激光功率为0.1μW量级,为进行环形激光器高精度稳频回路的研究提供了重要的检测手段.
Based on the beat frequency measurement,the high precision Ring Laser(RL) frequency stability measurement system is constructed with 633 nm Iodine Stabilized He-Ne Laser as the frequency standard.In the system the beat frequency signal is received by a broadband avalanche photodiode,the frequency of the processed signal is measured by a high precision counter.The result of experiments has shown that the bandwidth of the system is about 800 MHz,the system precision can reach the order of 10^(-11),the minimum discernible light power is the order of 0.1μW.The system provides an important way for deeply research of high precision RL frequency stability loop.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z2期63-66,共4页
Infrared and Laser Engineering
基金
"十五"国防预研项目
关键词
激光技术
频率稳定度测量
拍频检测
环形激光器
碘稳定激光器
Laser technique
Frequency stability measurement
Beat frequency measurement
Ring laser
Iodine stabilized He-Ne laser
