Laser device, including control of polarization mode

Details Laser device, including control of polarization mode Laser device, including control of polarization mode

1989-06-27

1991-06-04

Gonzalez, Frank

Coherent light generators

Particular beam control device

Modulation

372 32, 372 97, 372106, 372 27, H01S 310

Patent

active

050220349

ABSTRACT:
A laser device includes a resonant cavity with a gain medium therein, and first and second reflectors at either end, to form a quasi-isotropic laser. A feedback section is formed between the second reflector and a third reflector. A polarizer and modifier are provided in the feedback section. The polarizer and modifier can modify a variety of parameters, for example the polarization, phase, intensity or frequency of the feedback. The light feedback into the resonant cavity has an intensity much less than that within the resonant cavity, but sufficient to overcome any residual anisotropies. Control of the modifier causes the device to be operated in one of two or more polarization modes.

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