Coherent light generators – Particular pumping means – Chemical
Patent
1980-10-30
1983-01-18
Sikes, William L.
Coherent light generators
Particular pumping means
Chemical
372 55, 372 69, 372 76, H01S 309
Patent
active
043695140
ABSTRACT:
An efficient recombination laser comprises a resonant laser cavity, a gaseous laser material disposed in the cavity, and means for providing a plasma discharge in said laser material, which plasma discharge is confined to a cylindrical region along the axis of the laser cavity. The plasma in the gaseous laser material expands outward radially from the cylindrical region at the axis of the cavity and cools by interacting with the adjacent unexcited gas. The maximum laser gain is provided in an annular region, which annular region is adjacent to and surrounds the initial discharge cylindrical region. In one embodiment of the present invention, the means for providing the plasma discharge comprises two pin-type electrodes which extend into the cavity along the cavity axis.
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patent: 3891941 (1975-06-01), Roberts et al.
patent: 3916338 (1975-10-01), Jensen et al.
patent: 4114113 (1978-09-01), Hasson et al.
patent: 4135167 (1979-01-01), Godard
"Simple Metal-Vapor Recombination Lasers Using Segmented Plasma Excitation", Silfvast et al., Appl. Phys. Lett., vol. 36, No. 8, Apr. 1980, pp. 615-617.
"A Calculation of the Instantaneous Population Densities of Excited Levels of Hydrogen-Like Ions in a Plasma", by McWhirter et al., Proc. Phys. Soc., vol. 82, p. 641.
"Laser Gain Around 18.2 nm Produced in Carbon Plasma at Holl University," Laser Focus, Aug. 1980, pp. 24, 26 and 28.
Silfvast William T.
Wood, II Obert R.
Bell Telephone Laboratories Incorporated
Einschlag Michael B.
Jr. Leon Scott
Pfeifle Erwin W.
Sikes William L.
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