摘要
利用振动腔外反射镜使入射到低气压ＳＦ６气体吸收池内的ＣＯ２激光的频率受到Ｄｏｐｐｌｅｒ调制，并用相敏检波技术得到ＳＦ６分子的一阶微分光谱。对几条ＳＦ６分子吸收线的频率间隔进行了高精度的测量。最后讨论了这种获得微分光谱方法的优点。
An incident CO2laser beam into a low pressure SF6 cell was frequency modulated by an external dithering mirror through the Doppler effect. The differential spectrum ofSF6has been detected by utilizing the phase-sensitive technique. The frequency differencesamong several saturated absorption lines of SF6 were precisely measured. The practicalsignificance of the method is discussed.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1995年第5期357-360,共4页
Chinese Journal of Lasers
基金
国家自然科学基金
关键词
氟化硫
微分光谱
振镜调频
激光光谱
FM laser spectroscopy,Doppler effect,saturated absorption
