High powered laser with reduced optical aberration

Details High powered laser with reduced optical aberration High powered laser with reduced optical aberration

1991-10-23

1993-02-23

Lee, John D.

Coherent light generators

Particular resonant cavity

Unstable resonator

H01S 308

Patent

active

051896818

ABSTRACT:
A high power convective flow gas laser having reduced aberration is characterized by negative branch unstable resonator configuration. The present laser is configured to invert an intracavity beam about a focal point within the optical cavity, thereby avoiding a region of high temperature gas located adjacent to the excitation cathode. The present laser has an output beam whose profile corresponds to the theoretical annular shape and is further characterized by an extraction efficiency on par with those of known lasers.

REFERENCES:
patent: 4903271 (1990-02-01), Yasui et al.
patent: 5125001 (1992-06-01), Yagi et al.
David D. Smith, High-Power Laser Propagation: Thermal Blooming, Proceedings of the IEEE, vol. 65, No. 12, Dec. 1977.

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