Transversely excited atmospheric laser

Details Transversely excited atmospheric laser Transversely excited atmospheric laser

1987-06-29

1989-01-31

Scott, Jr., Leon

Coherent light generators

Particular pumping means

Electrical

372 83, 372 87, H01S 3097

Patent

active

048021857

ABSTRACT:
An atmospheric laser which is transversely excited includes main and preliminary discharge electrodes. Life of laser gas used to promote ionization between the main discharge electrodes is lengthened by providing a sufficient number of preliminary discharge electrodes, at a distance sufficiently close to the main discharge electrodes to promote preliminary ionization in a preliminary discharge space, prior to discharge in the main discharge space. According to preferred embodiments of the invention, one of the rare gases such as He is provided in the preliminary discharge space, and a mixture of CO.sub.2, N.sub.2, and He is provided in the main discharge. In order to enable the preliminary discharge electrodes to be closer to the main discharge electrodes, air may be used in place of one of the rare gases in the preliminary discharge space, so that the overall apparatus may be made yet smaller.

REFERENCES:
patent: 3886479 (1975-05-01), Pearson
patent: 3986139 (1976-10-01), Meneeby et al.
patent: 4491949 (1985-01-01), Beck et al.
patent: 4503542 (1985-03-01), Cirkel et al.
patent: 4554667 (1985-11-01), Kaminski
patent: 4637031 (1987-01-01), Gurs et al.
patent: 4686682 (1987-08-01), Haruta et al.
Improved Excitation Techniques For Atmospheric Pressure Co.sub.2 Lasers, Electronics Letters, 25th Mar. 1971, vol. 7 Nos. 5/6, pp. 141-142.
Investigations of glow discharge formation with volume preionization, Journal of Applied Physics, vol. 46, No. 4, Apr. 1975, pp. 1567-1574.

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