Coherent light generators – Particular beam control device
Patent
1996-07-09
1997-06-17
Scott, Jr., Leon
Coherent light generators
Particular beam control device
372 12, 372 19, 372 93, 372 27, H01S 308
Patent
active
056404123
ABSTRACT:
A folded Q-switched laser cavity uses total internal reflections of prisms to fold the intracavity beam. The index of refraction and the orientation of the prisms are selected to induce a predetermined phase delay between the two orthogonal polarization components of the linearly polarized intracavity beam. The predetermined phase delay rotates the intracavity beam polarization to an orthogonal direction such that an intracavity polarizer rejects the beam and the laser is held off from lasing. An electro-optic Q-switch cell is intermittently turned "on" whereby a second predetermined phase delay is induced onto the intracavity beam. The combination of the two predetermined phase delays results in a beam polarization orientation that is not rejected by the polarizer and the laser is not held off from lasing.
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Coherent Inc.
Jr. Leon Scott
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