Coherent light generators – Particular resonant cavity
Patent
1996-04-22
1998-10-13
Scott, Jr., Leon
Coherent light generators
Particular resonant cavity
372 95, 372 97, 372 64, 372103, H01S 308
Patent
active
058223541
ABSTRACT:
A diffusion-cooled laser has a lasing region shaped to provide a high power output laser beam of a high optical quality. The lasing region, which contains a lasing medium, has a narrow-aperture section and a free-space section. The narrow-aperture section is defined by resonator walls spaced apart a sufficiently small distance that enables effective excitation and cooling of the lasing medium. The free-space section is defined by resonator walls spaced apart a sufficiently larger distance that enables the laser beam to expand without restriction from the resonator walls in the free-space section. The narrow-aperture section enables the laser to generate a high power laser beam using a relatively low (40 MHz) ISM frequency. The free-space section allows the laser beam to expand sufficiently to exit the lasing region with a shape that is easily focused by inexpensive optical elements.
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Jr. Leon Scott
Synrad, Inc.
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