Method and apparatus for reduction of light intensity decay...

Details Method and apparatus for reduction of light intensity decay... Method and apparatus for reduction of light intensity decay...

G - Physics

04

F

G04F 5/14 (2006.01) H03L 7/26 (2006.01)

Patent

CA 2160187

Optical pumping devices use light reflected from reflecting surfaces to provide a portion of the light incident on the photodetector. Conventional optical pumping devices experience a decay, over time, of the initial light intensity incident on the photodetector. The optical pumping device of the invention experiences reduced light intensity decay. The invention passivates the reflecting surfaces to eliminate tarnish and oxidation by pretarnishing the surfaces or covering the surfaces with a material whose reflectivity does not vary over time, such as gold.

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