Optical phase measuring apparatus

Details Optical phase measuring apparatus Optical phase measuring apparatus

1984-02-17

1986-04-22

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356359, G01J 902

Patent

active

045838550

ABSTRACT:
An apparatus is described for measuring spatial phase difference between a signal beam and a reference beam in substantially real time, where the signal and reference beams are coherent beams of optical radiation superimposed upon each other and having orthogonal polarization states with respect to each other.

REFERENCES:
"Instantaneous Phase-Measuring Interferometry: Principles and Recent Advances Reported", Laser Focus/Electro-Optics, pp. 66-70, Oct. 1983.
Smythe et al., "Instantaneous Phase Measuring Interferometry", Proc. SPIE, vol. 429, pp. 16-21, 8/83.

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