Modulation method for studying gas lasers
A method is proposed for determining the relative excitation level, the cavity bandwidth, and the temperature of atoms in a gas laser by studying the response of the output intensity to modulation of the pumping or loss. The influence of resonance trapping and multimode operation on the measurements is determined. The possibility of measuring the gain-to-loss ratio for each of the travelling waves is discussed for a ring laser. The method has been used with a He--Ne laser operated on the red (lambda=0.63..mu..) and IR lines (lambda=l.l5..mu..) with a modulated current. The extent to which the gain exceeds the loss, the Doppler width of the pertinent lines, and the cavity bandwidth are all measured in the single-frequency case.
- Research Organization:
- Scientific-Research Institute of Mechanics and Physics, N. G. Chernyshevskii Saratov State University
- OSTI ID:
- 5999728
- Journal Information:
- Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States) Vol. 23:12; ISSN SPTPA
- Country of Publication:
- United States
- Language:
- English
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