Vibrational Nonequilibrium in Carbon Dioxide Electric Discharge Lasers,
STANFORD UNIV CALIF INST FOR PLASMA RESEARCH
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An experimental and theoretical investigation of the vibrational nonequilibrium in a CO2 - N2 - He electric discharge was performed under strong nonequilibrium conditions. Measurements of 9.6 and 10.6 micron gain were made in a laser amplifier tube using a tuneable, spectrally pure CO2 laser and a double-beam diagnostic system. The vibrational temperature for each of the three vibrational modes of CO2 was determined experimentally from a knowledge of gain in both laser bands and from a direct measurement of the vibrational temperature of the asymmetric mode using a band reversal scheme. The transition rate and optical cross sections for the 10.6 micron band and the 9.6 micron band were measured. A theoretical performance prediction of laser gain and vibrational temperatures was made using all significant energy transfer processes.
- Lasers and Masers
- Atomic and Molecular Physics and Spectroscopy