Wavelength monitoring system

Details Wavelength monitoring system Wavelength monitoring system

G - Physics

01

J

G01J 3/02 (2006.01) G01J 4/00 (2006.01) G01J 9/00 (2006.01) H01S 3/13 (2006.01)

Patent

CA 2270102

A laser light monitor capable of monitoring variations in laser wavelength with precision is disclosed. The monitor includes an optical analyzer and an optical splitter. The optical analyzer analyzes the laser light in a predetermined polarization direction to produce linearly polarized light. The optical splitter splits the linearly polarized light into first linearly polarized light and second linearly polarized light in different polarization directions which are further different from the predetermined polarization direction of the analyzer. A ratio of the intensities of the first and the second linearly polarized light is used to monitor a change of the laser wavelength.

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