G - Physics – 01 – J
Patent
G - Physics
01
J
G01J 3/28 (2006.01) G01J 3/50 (2006.01) H01J 5/16 (2006.01) H01J 40/14 (2006.01) H01L 31/18 (2006.01)
Patent
CA 2107062
ABSTRACT OF THE DISCLOSURE Methods for wavelength determination of a monochro- matic beam are described. The methods involve a detector unit containing at least one variable filter and at least one pair of photo detectors. The detectors have photo sensitive regions with their areas varying with the posi- tion in one direction. The wavelength for maximum trans- mission of the variable filter varies in the same direc- tion. By comparing the photo current values from the two detectors, wavelength of the incident beam is determined. Methods to construct wavelength discrimination junction photo detector pair and double barrier photo detector pair are also given.
Laou Philip
Ngo Phong Linh
Qiu Cindy Xing
Shih Ishiang
Laou Philip
Ngo Phong Linh
Qiu Cindy Xing
Shih Ishiang
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