Noise behavior of pulse in loss switched CO2 laser

The intensity of CO2 laser was correlated with the time delay by reason of the spontaneous emission fluctuation. The experimental and theoretical results show that when the laser peak present before the minimum switched loss, the larger the initial spontaneous emission, the shorter the time delay, because of and the intensity of laser peak is smaller in a B-class CO2 laser. When the laser peak present after the minimum switched loss, the time delay is longer because of the larger initial spontaneous emission, the intensity of laser peak is also larger.