Wavelength stabilization for a pulsed tunable laser

Details Wavelength stabilization for a pulsed tunable laser Wavelength stabilization for a pulsed tunable laser

1984-11-13

1990-10-09

Moskowitz, Nelson

Coherent light generators

Particular beam control device

Optical output stabilization

372 20, 350166, H01S 313

Patent

active

049625039

ABSTRACT:
A pulse laser system utilized for communication transmits a modulated pulsed laser beam having a precise wavelength to match a receiver. An etalon is positioned in the resonant cavity of the laser and is adjustable to tune the laser. A continuous wave reference beam is provided and is compared with the laser output beam and if the wavelength's bear other than a predetermined relationship with respect to one another, a control signal is generated to adjust the etalon in the laser resonant cavity. In one embodiment another etalon is placed in the reference beam path as well as the laser beam path with the transmitted beams being detected in order to derive normalized proportionality factors relating to each beam so that a comparison of the proportionality factors may be made and utilized for control purposes.

REFERENCES:
patent: 3471803 (1969-10-01), Forster
patent: 3482099 (1969-12-01), Goodwin
patent: 4081760 (1978-03-01), Berg
patent: 4150342 (1979-04-01), Johnston et al.
patent: 4468773 (1984-08-01), Seaton
Bondorenko et al., "Stabilization of a . . . Reference", 7/20/75, pp. 46-47, JETP Lett., vol. 22, #2.
Morinaga et al., "Stabilization of a . . . Offset-Lock", 2/77, pp. 383-384, Japan J. Appl. Phys., vol. 16, #2.
Suzuki, "Simultaneous Tuning . . . Wavelengths", 1982, Jpn. J. Appl. Phys. vol. 21, #10.

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