CO.sub.2 laser emitting at 16 microns in 02.degree.0-01'0 transi

Details CO.sub.2 laser emitting at 16 microns in 02.degree.0-01'0 transi CO.sub.2 laser emitting at 16 microns in 02.degree.0-01'0 transi

1977-12-19

1981-02-03

Davie, James W.

Oscillators

Molecular or particle resonant type

331 945G, 331 945PE, H01S 309

Patent

active

042491398

ABSTRACT:
A CO.sub.2 laser capable of emitting at 16 microns in the transition from the 02.degree.O to the 01'0 energy levels. The laser is particularly adaptable for use in laser enrichment to photoexcite uranium hexafluoride molecules. The CO.sub.2 medium is originally excited to many levels above and including the 02.degree.0 level. De-excitation to the 02.degree.0 level is induced from several upper levels populating it highly for improved laser gain. The transition between the 02.degree.0 and 01'0 levels at 16 microns is then permitted by depopulating the 01'0 level with 5 micron radiation from a CO laser. In the preferred case, excitation of the CO.sub.2 medium is by an electronic discharge, and all levels are excited from the ground state by the discharge without selectivity. The pumping from the terminal 01'0 level maintains the inversion for 16 microns lasing.

REFERENCES:
patent: 4053851 (1977-10-01), Krupke
patent: 4063190 (1977-12-01), Rink
patent: 4068194 (1978-01-01), Malarkey
D. K. Rice, "Carbon Monoxide Spectral Line Selection Studies," Northrup Corporation Technical Report, NLSD 72-13R, Aug. 1972 pp. 44-55.
R. M. Osgood, Jr. "Optically Pumped 16-um Co.sub.2 Laser" Applied Physics Letters, vol. 28, No. 6, Mar. 15, 1976, pp. 342-347.
T. J. Manuccia et al., "14-and 16-u Gasdynamic CO.sub.2 Lasers," Applied Physics Letters, vol. 29, No. 6, Sep. 15, 1976, pp. 360-362.
W. H. Kasner et al., "Electrical Discharge Excited 16 um CO.sub.2 Laser", 1977 IEEE/0SA Conference on Laser Engineering and Applications, Digest of Technical Papers, Jun. 1-3, 1977, p. 12.

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