Laser resonator optical alignment

Details Laser resonator optical alignment Laser resonator optical alignment

1998-02-03

1999-09-14

Healy, Brian

Coherent light generators

Particular beam control device

Mode locking

372 17, 372 19, 372 20, 372 29, 372 33, 372107, 372108, H01J 3098

Patent

active

059533544

ABSTRACT:
A laser resonator includes a laser medium having opposite end faces inclined at Brewster's angle and disposed in optical alignment between spaced-apart and tilted first and second optical elements. A method for adjusting the optical alignment includes pumping the laser medium to produce a laser beam, and adjusting separation spacing between the two optical elements. Tilt of at least one of the optical elements is adjusted in response to any observed change in beam cross-sectional size. In an additional embodiment, the laser medium is initially positioned at about equal spacings between the first and second elements. Position of the laser medium is then adjusted, at a constant value of the separation spacing, to within a position range selected for a specific value of a ratio of intracavity peak power of circulation of the laser beam and a critical power for self-focusing to effect discrimination of mode-locked operation over continuous wave operation.

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