Nonlinear optics microscope interferometer

Details Nonlinear optics microscope interferometer Nonlinear optics microscope interferometer

1978-05-04

1980-01-22

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 51, 356349, 356357, 356359, G02B 2114

Patent

active

041847377

ABSTRACT:
An interference microscope based on the principles of nonlinear optics comprises an ordinary microscope which has three additional internal optical elements, namely, two nonlinear frequency-doubling platelets and an infra-red filter, each suitably positioned. Light from an infra-red laser light source is passed through the platelets and filter, and the phase shift of the resulting image in the visible spectrum at the eyepiece is measured in order to calculate the optical thickness of a transparent object.

REFERENCES:
Chang et al., "Relative Phase Measurement Between Fundametal and Second-Harmonic Light", Phys. Rev. Lett., vol. 15, No. 1, pp. 6-8, 7/65.

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