Circuit arrangement for starting and operating a gas discharge l

Details Circuit arrangement for starting and operating a gas discharge l Circuit arrangement for starting and operating a gas discharge l

1984-05-03

1989-04-25

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

315 58, 307318, H01S 300

Patent

active

048254436

ABSTRACT:
A circuit arrangement for starting and operating a gas discharge laser comprises two supply lines (4,5) adapted to supply a direct current to the gas discharge laser (1). A ballast resistor (7) is connected in at least one of the supply lines. By shunting the ballast resistor with means (8) through which a starting current flows during the starting phase of the gas discharge laser, a large current flows through the laser during said starting phase so that the ionization in the laser starts readily. As a result the ignition of the laser is more reliable. The means may be a capacitor or a V.D.R.

REFERENCES:
patent: 3447098 (1969-05-01), Eckberg
patent: 3601653 (1971-09-01), Golser
Gupta et al.; "A Circuit for Simultaneous Striking of the Coupled Plasma Tubes of a Coaxial cw-CO.sub.2 Laser"; J. Phys. E: Sci. Inst., vol. 13, 1980, p. 1267.
Wheeler; "Power Supplies for Continuous Gas Lasers and Similar Discharges"; J. Phys. E: Sci. Inst., vol. 4, 1971; p. 159.
Boylestad et al.; "Electronic Devices & Circuit Theory"; second-edition 1978, Prentice-Hall.
Howells et al.; "A Medium PRF UV Preionized IEA CO.sub.2 Laser"; J. Phys. E: Sci. Inst., vol. 14, 1981.
Fortin; "Prelim. Measur. of 2 TEA Pressure CO.sub.2 Laser", Canad. Jour. of Phys., vol. 49, 1971, pp. 257-264.
Goldsbourough; Laser Handbook; "Laser Devices and Techniques", pp. 612-613.

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