Optical parametric oscillator with unstable resonator

Details Optical parametric oscillator with unstable resonator Optical parametric oscillator with unstable resonator

1993-08-24

1995-02-14

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Unstable resonator

372 21, 372 92, 372 99, 372 69, 372 22, 372 97, 359328, H01S 308

Patent

active

053902114

ABSTRACT:
A high powered OPO system which produces a substantially collimated, low divergence output beam is based on the use of an unstable resonator. An optical parametric gain medium, such as beta-barium borate (.beta.-BBO), lithium tri-borate (LBO), cesium borate (CBO), potasium tri-phosphate (KTP), or other similar materials is mounted within the unstable resonator with suitable tuning mechanisms. Optics are provided for supplying a pump beam through the optical parametric gain medium to induce gain. In a preferred system, the unstable resonator comprises a positive branch, confocal unstable resonator. Further the unstable resonator may be injection seeded for a narrow linewidth output.

REFERENCES:
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Hecht, Eugene, Hecht Optics, 2d Ed., published 1987 by Addison-Wesley Publishing Co., Inc.
Koechner, Walter, Solid-State Laser Engineering 2d Ed., published 1988 by Springer-Verlag.

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