We present the results of our theoretical and experimental investigation of the pulsed heterodyne of an electro-optically <i>Q</i>-switched radio-frequency-excited CO<sub>2</sub> waveguide laser with two channels. We used a six-temperature model for CO<sub>2</sub> lasers to describe the process of dynamic emission in an electro-optically <i>Q</i>-switched laser. The calculated pulse waveforms are in good agreement with the experiment, which we used as the basis for our theoretical study of a pulsed laser heterodyne and its Fourier transform frequency spectrum. The experimental results are consistent with the theoretical analyses.
© 2001 Optical Society of America
(040.2840) Detectors : Heterodyne
(070.2590) Fourier optics and signal processing : ABCD transforms
(140.3470) Lasers and laser optics : Lasers, carbon dioxide
(140.3540) Lasers and laser optics : Lasers, Q-switched
Zhaoshuo Tian, Qi Wang, and Chunhui Wang, "Investigation of the Pulsed Heterodyne of an Electro-Optically Q-Switched Radio-Frequency-Excited CO2 Waveguide Laser with Two Channels," Appl. Opt. 40, 3033-3037 (2001)