Folded internal beam path for gas stable/unstable resonator lase

Details Folded internal beam path for gas stable/unstable resonator lase Folded internal beam path for gas stable/unstable resonator lase

1996-08-13

1998-06-09

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Folded cavity

372 95, 372 99, 372103, 372 55, 372 92, H01S 3181

Patent

active

057646805

ABSTRACT:
A gas stable/unstable resonator laser having a folded internal beam path includes a front reflective surface (25) mounted substantially perpendicular to the electrodes (21(1),21(2)), and a rear reflective surface (24) mounted substantially parallel to the front reflective surface. A lower fold reflective surface (26') is mounted substantially adjacent to and at approximately a 45 degree angle with respect to the front reflective surface (25) and an upper fold reflective surface (28') is mounted at approximately a 90 degree angle with respect to the lower fold reflective surface (26'). Light energy (27) is reflected between the front reflective surface and rear reflective surface and subsequently reflects off the lower fold reflective surface (26'). Light energy is then reflected from the lower fold reflective surface (26') to the upper fold reflective surface (28'), passing the light energy substantially perpendicular to the front reflective surface and rear reflective surface. Light energy (32) is then reflected through an output window (29), having a beam aspect ratio of approximately 1 so that the beam may be corrected by a single cylindrical lens.

REFERENCES:
patent: 4669088 (1987-05-01), Waite
patent: 4792765 (1988-12-01), Smith et al.
patent: 5023886 (1991-06-01), Hobart et al.
patent: 5307367 (1994-04-01), Karube
patent: 5596594 (1997-01-01), Egawa

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