LASER DEVICE WITH OSCILLATION WAVELENGTH CONTROL

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 monito...

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Bibliographic Details
Main Authors SUGITATSU; ATSUSHI, WAKATA; HITOSHI
Format Patent
LanguageEnglish
Published 14.07.1992
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary: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.
Bibliography:Application Number: US19910658475