CO_2激光器腔外吸收室4.3μm荧光稳频技术  

Stabilized Technique of CO_2 Laser Frequency by 4.3μm Fluorescence with External Absorption Gas Cell

作　　者：吴桂林[1] 滕永杰[1] 徐绍华 杨维纲 

机构地区：[1]大连理工大学物理系

出　　处：《大连理工大学学报》1989年第6期635-638,644,共5页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目

摘　　要：介绍了腔外吸收室４．３μｍ荧光稳频方法。对利用低压 ＣＯ２气休的 ４.３μｍ荧光饱和共振吸收来稳定ＣＯ２激光频率的原理和装置进行了较详细的描述．测量了４. ３ μｍ荧光兰姆凹陷的相对深度及其宽度；利用三次微分信号确定了最佳调制电压范围．稳频激光输出功率为６Ｗ；利用鉴频曲线估算出锁定后频率稳定度为１０－１０量级。This paper introduces the method of frequency stabilization in which 4.3 m fluorescence with an external absorption gas cell is used. A detailed description about the principle and the device of stabilized frequency of CO2 laser by means of the saturated resonance absorption of 4.3 m fluorescence of CO2 gas at low pressure is given in this paper. The author has measured the relative depth and width of Lamb dip of 4.3 m fluorescence. The best range of modulation signal is determined by utilizing the third differential signal . The output power of laser is about 6 W. Using frequency discremination curve, the author has also estimated frequency stability at 10-10 range.

关 键 词：CO2激光器 吸收室 荧光稳频 频率 

分 类 号：TN248.22[电子电信—物理电子学]