相干探测、高精度激光测距、高分辨率光谱学、激光雷达等领域均需要频率稳定的单纵模激光。文中对种子注入TEA CO2激光器进行了理论和实验研究。设计了通过频率稳定的种子光注入, 获得单纵模TEA CO2激光输出。进行了初步的实验研究, 获得单纵模激光输出, 单脉冲能量100 mJ, 输出光波长10.59 μm(10P20), 与注入种子光波长相同, 并对实验结果进行了分析。本方法获得的输出激光波长、远场发散角、频率稳定度及M2因子等均与种子光相同, 即如果采用光束质量极好的种子光源, 可以获得频率稳定度高且光束质量极好的大功率激光输出, 对科研和**应用借鉴意义重大。

A frequency stabilized single longitudinal mode (SLM) laser is widely used in coherent detection, high-accuracy laser ranging, high-resolution spectrum, laser radar, etc. TEA CO2 laser seed injection technique is researched theoretically and experimentally. The SLM TEA CO2 laser output is obtained through frequency stabilized seed laser injection design. The preliminary experimental research is performed to obtain SLM laser output with 100 mJ single pulse energy and 10.59 μm (10P20) output laser wavelength, which is the same as the injection seed laser wavelength, and the experimental results are analyzed. In this method, the wavelength, far field beam divergence angle, frequency stability and M2 factor of the output laser are the same as those of the seed laser, so if a high beam quality seed laser source is used, a high-power output of the laser with high frequency stability and high beam quality will be got, and it is significant to scientific and national defense use.