H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/08 (2006.01) G01J 11/00 (2006.01)
Patent
CA 2376727
A nonlinear optical crystal is composed of 2-adamantyl-5-nitorpyridine (AANP) allowing the type 2 phase matching to the sampling light and a measuring object light, emitting a sum frequency light of the measuring object light and the sampling light, with the polarization directions thereof being perpendicular to each other, when the sampling light and measuring object light multiplexed by a multiplexer are entered. When the sum frequency light is emitted through the nonlinear optical crystal, a control portion controls the polarization direction of the sampling light so as to be parallel to a predetermined reference axis located within a plane perpendicular to a phase matching direction of the nonlinear optical crystal. The predetermined reference axis is a single axis maintaining parallelism with the crystal axis of the nonlinear optical crystal even if the wavelength of the inputted light is changed.
Kawanishi Satoki
Otani Akihito
Otsubo Toshinobu
Shake Ippei
Takara Hidehiko
Anritsu Corporation
Gowling Lafleur Henderson Llp
Nippon Telegraph & Telephone Corporation
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