Frequency stabilization of long wavelength semiconductor laser v

Details Frequency stabilization of long wavelength semiconductor laser v Frequency stabilization of long wavelength semiconductor laser v

1989-06-05

1990-06-05

Sikes, William L.

Coherent light generators

Particular beam control device

Optical output stabilization

372 96, H01S 313

Patent

active

049320300

ABSTRACT:
Frequency stabilization of a long wavelength semiconductor laser is achieved by employing the optogalvanic effect in a feedback control loop with the laser. Absolute references are obtained using noble gases such as argon (1.2 .mu.m to 1.4 .mu.m) and krypton (1.4 .mu.m to 1.6 .mu.m). Standard detection, feedback control and dithering lock-in techniques are used to insure proper frequency stabilization.

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