Polarization interferometer optical voltage detector utilizing m

Details Polarization interferometer optical voltage detector utilizing m Polarization interferometer optical voltage detector utilizing m

1994-02-22

1995-05-30

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356345, G01B 902

Patent

active

054206863

ABSTRACT:
Polarized light is input to an optical modulator typically consisting of an electrooptic crystal. The polarization state of the input light is changed in accordance with a voltage being applied to the optical modulator. Receiving the light output from the optical modulator, a polarization interferometer produces an interference fringe on the input surface of a photodetector such as a streak camera and a CCD line sensor. Based on an output signal of the photodetector, an analyzing device calculates a pitch and a movement distance of the interference fringe to determine the voltage being applied to the optical modulator.

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