Method and apparatus for compensating thermal lensing effects in

Details Method and apparatus for compensating thermal lensing effects in Method and apparatus for compensating thermal lensing effects in

1996-06-28

1998-05-26

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372103, 372107, 372 92, 372101, H01S 308

Patent

active

057578427

ABSTRACT:
In a laser cavity having an optical axis, a laser medium for forming a laser beam, the laser medium having a central axis off-set from the optical axis, the laser medium exhibiting focusing characteristics that vary with changes in optical power pumped into the laser medium, at least one pair of mirrors oppositely positioned for reflecting at least a portion of the laser beam, one of the mirrors being an output coupler, the laser cavity further comprising at least one focusing element having a central axis positioned between one of the mirrors and the laser medium such that the central axis of the focusing element is displaced from the optical axis a distance that is a function of the displacement of the laser medium central axis from the optical axis and the optical axis passes through the focusing element to substantially eliminate lensing effects produced by the laser medium.

REFERENCES:
patent: 4848881 (1989-07-01), Kahan et al.
patent: 5172388 (1992-12-01), Long
patent: 5233624 (1993-08-01), LaPlante et al.
patent: 5237584 (1993-08-01), Shannon et al.
patent: 5283796 (1994-02-01), Fink
patent: 5329544 (1994-07-01), Shachrai et al.
patent: 5406577 (1995-04-01), Gagosz

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