Modeling The CF4 Laser

C. W. Patterson; R. S. McDowell; B. J. Krohn; N. G. Nereson

doi:10.1117/12.932044

30 December 1981 Modeling The CF₄ Laser

C. W. Patterson, R. S. McDowell, B. J. Krohn, N. G. Nereson

Proceedings Volume 0288, Los Alamos Conf on Optics '81; (1981) https://doi.org/10.1117/12.932044
Event: Los Alamos Conference on Optics, 1981, Los Alamos, United States

Abstract

The CO₂-pumped CF₄ laser is a potentially useful source of line-tunable infrared radiation in the region 605-655 cm 1, and the spectroscopy of CF₄ has been carried to the point that the laser frequencies that will result from any given pump line can be calculated to better than 0.01 cm 1. We now report quantitative intensity and line-broadening studies on CF₄ and their application to modeling the laser gain. First, absorption measurements on isolated lines in the ν₂ + ν₄pump band at a series of pressures yield an effective transition dipole moment for this band of 0.010 Debye. At the same time the transition moment for the (ν₂ + ν₄) - ν_₂ laser band has been calculated and agrees well with the results of laser self-absorption measurements. Finally, linewidths determined as a function of pressure yield a pressure-broadening coefficient of ca. 10 MHz/torr, significantly greater than that expected from a hard-sphere gas-kinetic model. From these data the gain of the CF₄ laser can be calculated at various pressures and temperatures; the results are in reasonable agreement with measured values.

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C. W. Patterson, R. S. McDowell, B. J. Krohn, and N. G. Nereson "Modeling The CF₄ Laser", Proc. SPIE 0288, Los Alamos Conf on Optics '81, (30 December 1981); https://doi.org/10.1117/12.932044

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