Electric discharge gas dynamic laser
Patent
·
OSTI ID:6937968
An electric discharge gas dynamic laser is described, in which excitation of one gas species is obtained in a plenum by use of a dc glow discharge. The gas present in the plenum is then accelerated through an array of supersonic nozzles where the laser species is injected and mixed with the primary flow. Energy transfer and lasing occur in the supersonic region of the flow. Brewster-angle windows which extend from 1 to 28 cm downstream from the nozzle exit plane enables a laser cavity or diagnostic apparatus to be positioned at a variable distance downstream from the injection point. The optics may be mounted on a motor-driven translation table so that continuous scans of the region downstream of the nozzle exit plane may be conveniently made. The present facility may easily be operated with a subsonic cavity, with an RF discharge to augment the dc plenum discharge, with all gases premixed, or with any combination of these configurations.
- Assignee:
- Environmental Protection Agency
- Patent Number(s):
- US 4056789
- OSTI ID:
- 6937968
- Country of Publication:
- United States
- Language:
- English
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