Coherent light generators – Particular beam control device – Q-switch
Reexamination Certificate
2007-10-09
2007-10-09
Nguyen, Dung (Department: 2828)
Coherent light generators
Particular beam control device
Q-switch
C372S035000
Reexamination Certificate
active
10886902
ABSTRACT:
Various electro-optical modulator module designs are presented, which can provide for uniform, symmetric, and efficient heat removal for mode-locking, Q-switching, and/or cavity dumping operations. Heat can be uniformly extracted from an EO crystal without imposing undue stress, thereby preventing birefringence and laser beam degradation. A liquid-cooling approach can be used for high-duty operations, such as mode-locking operations. Efficient heat removal can prevent thermal run-away from electrical heating of the crystal due to the large drop in the electrical resistance of CdTe with increasing temperature when operated above 50° C. RF or video arcing and subsequent damage to the EO crystal can be prevented by surrounding the crystal with a low dielectric constant material that lowers the capacitance coupling to ground, while still maintaining good thermal cooling.
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Hennessey, Jr. Thomas V.
Laughman Lanny
Michaud Raymond
Seguin Vernon A.
Smucz Joseph S.
Coherent Inc.
Nguyen Dung
Stallman & Pollock LLP
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