Reduction of thermal blooming by beam optimization. Final report 1 Oct 1973--30 Sep 1974
Technical Report
·
OSTI ID:7251490
The report examines various techniques for reducing the severe thermal distortion effects which represent a serious limitation for high power CO/sub 2/ laser beams in the atmosphere. The principal accomplishments reported here are in the areas of (1) beam amplitude and phase shaping for reducing cw thermal blooming effects, and (2) the investigation of multiple pulse or pulse train propagation as a means for alleviating the thermal blooming problem. In Section II the studies of beam optimization for cw propagation are discussed. Numerical calculations of the thermal blooming were used to investigate (a) the effects of beam amplitude shaping, and (b) a reciprocity approach for establishing the optimum beam amplitude and phase shape.
- Research Organization:
- United Aircraft Corp., East Hartford, Conn. (USA)
- OSTI ID:
- 7251490
- Report Number(s):
- AD-A-020497; UARL-N-921769-4
- Country of Publication:
- United States
- Language:
- English
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