NDLI: Space-qualified CO2laser

Content Provider	IEEE Xplore Digital Library
Author	Reynolds, R.S.
Copyright Year	1970
Description	Author affiliation: Sylvania Electronics Systems, Mountain View, Calif. (Reynolds, R.S.)
Abstract	The parameters of greatest importance in a laser to be used for communications purposes in a space environment are weight, overall efficiency, ruggedness, and lifetime. We have developed a detailed design that tends to optimize these parameters for a 1-watt, conduction-cooled CO2laser. The laser tube utilizes a metal-ceramic structure for mechanical strength with a coaxial gas ballast reservoir. The electrodes are also designed coaxially for maximum electrical efficiency. Beryllium oxide was chosen as the ceramic material for enhanced heat removal by conduction to a metal heat sink. The warmest spot in the bore (other than the cathode) is only 4°C above the heat sink temperature under maximum power input conditions. The tube uses a 4-mm-diameter bore and has an active length of 16 cm. The ends of the tube are sealed with two gallium arsenide Brewster windows using metal soldering techniques. The mirror cavity is hemi-confocal and utilizes a 7% transmission output mirror (near optimum).
Starting Page	92
Ending Page	94
File Size	165259
Page Count	3
File Format	PDF
DOI	10.1109/IEDM.1970.188283
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1970-10-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heat sinks Gas lasers Coaxial components Boring Mirrors Optical design Design optimization Electronic ballasts Reservoirs Electrodes
Content Type	Text
Resource Type	Article

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