Electric control system for a metal ion laser

Details Electric control system for a metal ion laser Electric control system for a metal ion laser

1986-07-21

1987-10-20

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 56, 372 34, 372 33, 372 29, H01S 300

Patent

active

047019255

ABSTRACT:
A He-Cd ion laser of the type having a series of anodes open to the interior of a hollow cathode, a series of metal chambers containing a supply of Cd to be vaporized, and a heater for heating the metal chambers for vaporizing the Cd supply. For holding constant the Cd vapor pressure within the hollow cathode and, in consequence, the intensity of the output beam, an electric control system is provided which comprises a constant current regulator connected to each anode for supplying a constant current thereto, and a heater control circuit for controlling the magnitude of a current fed to the metal chamber heater so as to hold the output voltage of each constant current regulator equal to a reference voltage.

REFERENCES:
patent: 3868593 (1975-02-01), Fukuda et al.
patent: 4021845 (1977-05-01), Wang
patent: 4052680 (1977-10-01), Wang et al.
patent: 4105954 (1978-08-01), Wang et al.
patent: 4193042 (1980-03-01), Wang
patent: 4224579 (1980-09-01), Marlett et al.
patent: 4232274 (1980-11-01), Tokudome et al.
patent: 4257014 (1981-03-01), Hattori et al.

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