【摘要】 <正> 测量CO₂激光器的小信号增益,通常是将被测放电管作为一支放大器,测量其放电时的输入输出光强;或者在腔内插入衰减片,测量其停振时的腔损耗。这里我们提出另一种可以方便地测量小信号增益的方法。该方法是在腔内置入一个电光晶体,由于晶体的损耗可随加在它上面的电压而连续地改变,于是便得到一种可连续调整腔内损耗的元件。改变施加在晶体上的电压,很容易测出恰好使激光振荡停止的阈值电压。然后根据内腔耦合调制的理论,也就很容易算出不同电压下由晶体引入的损耗,从而也就得到放电管的小信号增益。更多还原

【Abstract】 A method of measuring small signal gain of CO₂ lasers is studied by using a CdTe crystal as a loss tunable cell in the cavity. By using the equivalent cavity mirrors and considering the thermo-lensing effect, the small signal gains of lasers in different structures were measured.更多还原