关于氨气分子在1.5μm吸收谱线及其在激光稳频上的应用

On the NH_3 molecule's absorption line in 1. 5μm band and its application in frequency stabilization of laser

本文介绍了氨气分子在1.5μm波段的六条吸收谱线,并将理论计算的吸收线形半值全宽与实验值加以比较,测得了波长为1.53735μm的激光通过气压为2.79×10~3Pa的氨分子吸收室后的吸收波形及其一阶微分波形,并利用其对外腔半导体激光器进行稳频,绝对频率稳定度可达1MHz。

This paper presented six absorption lines of NH3 molecule in 1.5μm band. The absorption profiles of the 1. 5361μm wave length laser in six different absorption cell are observed and compared the calculated half linewidth with the experimental value. At the same time the absorption profile and its differential profile of the 1. 53735μm laser passed through an absorption cell filled with NH3 molecule with the barometric pressure of 2. 79×103 pa are also observed. Using the results the frequency stabilization of external cavity semiconduct laser is carried out and the absolute frequency stabilization, can reach 1 MHz.