Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1990-09-14
1992-03-31
Scott, Jr., Leon
Coherent light generators
Particular resonant cavity
Specified cavity component
372 23, 372 92, 372108, 372 95, H01S 308
Patent
active
051014157
ABSTRACT:
An improved laser mirror (22) is disclosed with wavelength selective coatings on the inner and outer surfaces (32) and (34) thereof. The coating on the inner surface (32) is reflective of light in a first wavelength region (36) and transmissive of light in a second wavelength region (38). The outer surface (34) is reflective of light in the second wavelength region ( 38). In the preferred embodiment, one of the surfaces of the mirror is planar and the other is curved to facilitate alignment. The different curvatures of the inner and outer surfaces allows the diameter of the beam of the two wavelength regions to be independently controlled allowing optimization of the mode generated by the laser (20).
REFERENCES:
patent: 3688218 (1972-08-01), Gleason
patent: 4615033 (1986-09-01), Nakano et al.
patent: 4615034 (1986-09-01), von Gunten et al.
patent: 4757507 (1988-07-01), Wondrazek et al.
patent: 4903271 (1990-02-01), Yasui et al.
patent: 4951285 (1990-08-01), Cole et al.
Bethea; "Megawatt Power at 1.318 .mu. in Nd.sup.3 + : YAG and Simultaneous Oscillation at Both 1.06 and 1.318 .mu."; IEEE Jour. Quant. Elect., Feb. 1973.
Cook, Jr. Benjamin H.
Kolb William P.
Coherent Inc.
Jr. Leon Scott
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