High power laser having staged laser adjoint pulsed feedback

Details High power laser having staged laser adjoint pulsed feedback High power laser having staged laser adjoint pulsed feedback

1991-10-23

1992-12-22

Healy, Brian

Coherent light generators

Particular resonant cavity

Unstable resonator

372 97, 372 99, 372 92, 372 18, 372 26, 372 55, H01S 308

Patent

active

051739186

ABSTRACT:
A laser with an unstable resonator configuration is described with a second, lower power auxiliary laser to provide a feedback beam to pulse high power CW lasers without exceeding the power handling capability limitation of currently available modulators. The present laser relies on adjoint mode feedback provided by the auxiliary laser to accomplish pulsed operation with a modulator in the low power feedback beam path. Higher power output beams can be generated with multiple stages of auxiliary laser providing adjoint mode feedback, thereby reducing incident power on modulation devices while providing adequate adjoint beam power to effectively pulse the high power laser. In certain embodiments a single gain generator is used to drive the main and auxiliary lasers.

REFERENCES:
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patent: 4079340 (1978-03-01), Weiner et al.
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patent: 4429400 (1984-01-01), Kaye
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patent: 4682339 (1987-07-01), Sziklas et al.
patent: 4766393 (1988-08-01), Johnson
patent: 4841541 (1989-06-01), Sziklas et al.

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