Portland State University. Department of Electrical Engineering
Lee W. Casperson
Date of Award
Master of Science (M.S.) in Electrical Engineering
1 online resource (56 p.)
Carbon dioxide lasers
Spontaneous pulsations have been observed in the output of a CO2 laser. The temporal waveforms, transverse mode patterns, and laser lines are simultaneously measured under various operation conditions. The experimental data show that these pulsations have a direct connection with the transverse modes. We interpret the oscillations as being caused by mode beating, and the frequency shift of the oscillation as resulting from mode pulling. The theoretical explanations for these effects are in good agreement with the experimental results.
Zhang, Li, "Dynamic behavior of CO₂ lasers" (1989). Dissertations and Theses. Paper 4120.