Device and method for time-resolved optical measurements

Details Device and method for time-resolved optical measurements Device and method for time-resolved optical measurements

1997-04-22

1998-03-31

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356432, G01B 902, G01N 2100

Patent

active

057344701

ABSTRACT:
An optical modulating system which allows modulation of a single light beam with a spatially filtering mask to form a spatially periodic, time-dependent excitation field. Once generated, the field can be used to induce a transient grating in a sample. The optical modulating system is additionally configured to automatically orient a probe beam at the Bragg angle, thereby allowing the intensity of the probe beam diffracted off the induced grating to be maximized. Measurement of the diffracted probe beam allows, for example, determination of mechanical, thermal, electrical, and optical properties of the sample.

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