铜蒸汽激光器是一种典型的共振亚稳跃迁激光 ,通常认为其激光脉冲出现于电流脉冲的前沿。实验研究表明 ,钙离子激光脉冲在各种条件下始终在电流脉冲的前沿 ,而对于CuBr激光 ,其脉冲的延时时间与工作温度有关。由于工作物质铜原子是通过分解CuBr成为铜离子 ,再由铜离子复合成铜原子 ,故工作温度较低时 ,复合系数较大 ,造成激光脉冲的延时时间变长 ,而当工作温度较高时 ,复合系数变小 ,使激光脉冲提前 Copper vapor laser is a typical resonant metastable metastable laser, it is generally considered that the laser pulse appears in the front of the current pulse. Experimental studies have shown that calcium ion laser pulses are always at the forefront of current pulses under various conditions, whereas for CuBr lasers the pulse delay time is related to the operating temperature. As the working material of copper atoms through the decomposition of CuBr into copper ions, and then copper ions into copper atoms, so the working temperature is low, the composite coefficient larger, resulting in a longer laser pulse delay time, and when the working temperature is high When the composite coefficient becomes smaller, the laser pulse advance