Beam shaping to suppress phase mismatch in high power second-harmonic generation

Beam shaping to suppress phase mismatch in high power second-harmonic generation

A deliberate pattern of distributing the radiation energy of a high power laser can minimize the steady-state thermal gradients in a nonlinear crystal, thus permitting a large increase of the average powers of such systems. The theory of the two main techniques of beam shaping-fanning and scanning-i...

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Veröffentlicht in:IEEE journal of quantum electronics 1980-12, Vol.16 (12), p.1356-1364
Hauptverfasser: Hon, D., Bruesselbach, H.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Aircraft
Cities and towns
Frequency
Laser beams
Laser theory
Laser tuning
Power generation
Steady-state
Temperature
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Zusammenfassung:A deliberate pattern of distributing the radiation energy of a high power laser can minimize the steady-state thermal gradients in a nonlinear crystal, thus permitting a large increase of the average powers of such systems. The theory of the two main techniques of beam shaping-fanning and scanning-is developed. Results of several experiments based on this theory are given. Experimental techniques, including some not yet attempted, are discussed.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1980.1070427