Spectroscopy of the CF/sub 4/ laser

Conference · Mon Jan 01 00:00:00 EST 1979 · SPIE Semin. Proc.; (United States)

OSTI ID:6610496

McDowell, R S; Patterson, C W; Jones, C R; Buchwald, M I; Telle, J M

When ..nu../sub 2/ + ..nu../sub 4/ of CF/sub 4/ at 1066 cm/sup -1/ is pumped by the 9.4-..mu..m CO/sub 2/ laser, stimulated emission on the (..nu../sub 2/ + ..nu../sub 4/) ..-->.. ..nu../sub 2/ transition produces many discrete laser lines in the region 605 to 655 cm/sup -1/. A comprehensive program of Doppler-limited absorption spectroscopy of CF/sub 4/ has been carried out using tunable semiconductor diode lasers, and has led to a full understanding of the rovibrational energy levels involved in the laser process. The frequencies of 28 laser lines of /sup 12/CF/sub 4/ have been measured with an accuracy of +-0.2 cm-/sup 1/, for /sup 12/C/sup 16/O/sub 2/ pump lines from P(14) to R(24). From the complete vibration-rotation analysis of the ..nu../sub 2/ + ..nu../sub 4/ band, the pump and laser transitions have been identified. Using the spectroscopic constants determined in the band analyses, we can predict within +-0.2 cm-/sup 1/ the laser lines to be expected from any given pumping frequency. All observed laser lines have been accounted for; in a few cases there is evidence for a relaxation of J-value and/or Coriolis sublevel in the upper state. Application of these results to improving the performance of the CF/sub 4/ laser and for designing it to produce specific desired output frequencies is discussed.

• Research Organization: Los Alamos Scientific Lab., NM
• OSTI ID: 6610496
• Journal Information: SPIE Semin. Proc.; (United States), Vol. 190; Conference: LASL conference on optics '79, Los Alamos, NM, USA, 23 May 1979
• Country of Publication: United States
• Language: English

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