Laser device with oscillation wavelength control

Details Laser device with oscillation wavelength control Laser device with oscillation wavelength control

1991-02-20

1992-07-14

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, 372108, H01S 313

Patent

active

051309980

ABSTRACT:
Laser devices including a rough and a fine adjustment etalons are controlled for wavelength stabilization. Further, a power monitoring mechanism may be provided for measuring the output power of the laser beam, and the rough adjustment etalon is selectively controlled in response to the power monitoring mechanism or to the calculation means. Alternatively, a separate light source oscillating at a wavelength different from the oscillation wavelength of the laser resonator emits light which is split into two parts by a beam splitter. The beams of light emitted from the light source and reflected by the rough adjustment etalon are received by a pair of photosensors, and the rough adjustment etalon is controlled so as to minimize the differential output of the two photosensors.

REFERENCES:
patent: 4839614 (1989-06-01), Hill et al.
patent: 4914662 (1990-04-01), Nakatani et al.
patent: 4947398 (1990-08-01), Yasuda et al.
patent: 4975919 (1990-12-01), Amada et al.
patent: 4977563 (1990-11-01), Nakatani et al.

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