Optical resonator for laser oscillating apparatus
An optical resonator for a laser oscillating apparatus is described comprising mirrors disposed within a hollow cylindrical housing defining a lasing region therein, including a relatively large front folding mirror disposed at the one end of the lasing region, a relatively large rear folding mirror disposed at the opposite end of the lasing region, are latively small totally reflective concave primary mirror disposed adjacent the front folding mirror, and a relatively small semi-transmissive output mirror disposed adjacent both the front folding mirror and the primary mirror. The mirrors are angularly disposed with respect to one another so that a ray of radiation is repeatedly reflected through the lasing region. The optical resonator is characterized in that the rear folding mirror comprises a pair of plane reflecting mirrors arranged approximately orthogonally to each other and disposed with their reflecting surfaces opposing the front folding mirror, the pair of plane reflecting mirrors mounted on a supporting means that is adjustable to permit relative alignment of the mirror reflecting surfaces at an intersecting angle in the neighborhood of 90/sup 0/.es
- Assignee:
- Laser Corp. of America, Lowell, MA
- Patent Number(s):
- US 4723256
- OSTI ID:
- 5415647
- Resource Relation:
- Patent File Date: Filed date 20 Mar 1986
- Country of Publication:
- United States
- Language:
- English
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