Wavelength measuring device and laser apperatus equipped...

Details Wavelength measuring device and laser apperatus equipped... Wavelength measuring device and laser apperatus equipped...

G - Physics

01

J

G01J 3/46 (2006.01) G01J 9/02 (2006.01) H01S 3/137 (2006.01) H01S 3/139 (2006.01) H01S 3/225 (2006.01)

Patent

CA 2095472

ABSTRACT OF THE DISCLOSURE An inexpensive, high-accuracy and highly stable wave- length measuring device and laser device without requiring any complicated and expensive temperature regulating means, wherein an error in the measured wavelength of a to-be- measured light obtained from a photosensor by detecting tem- perature of a Fabry-Perot etalon with a temperature sensor and operating the error in wavelength from the detected data, caused by thermal expansion of a spacer.

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