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Title:
DEVICE FOR CONTROLLING WAVELENGTH OF LASER BEAM
Document Type and Number:
WIPO Patent Application WO/1988/007276
Kind Code:
A1
Abstract:
According to this invention, the center wavelength in the main peak of a laser beam and the power at either the side band or the center wavelength are detected, and the selectivity of a wavelength selector arranged between a laser chamber and a rear mirror is controlled so that the detected center wavelength will be within a desired allowable range and that the detected power will be either a minimum or a maximum.

Inventors:
AMADA YOSHIHO (JP)
WAKABAYASHI OSAMU (JP)
KOWAKA MASAHIKO (JP)
Application Number:
PCT/JP1988/000293
Publication Date:
September 22, 1988
Filing Date:
March 18, 1988
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
H01L21/30; H01L21/027; H01S3/106; H01S3/137; H01S3/225; (IPC1-7): H01S3/137
Foreign References:
JPS5654596Y21981-12-19
JPS6237893B21987-08-14
JPS6016479A1985-01-28
JPS6022630Y21985-07-05
JPS5750868U1982-03-24
US4150342A1979-04-17
JPS455199B1
JPS549956A1979-01-25
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