Applications Of High Speed Pulsed-Laser Interferometry

Osuk Y. Kwon; Dean M. Shough

doi:10.1117/12.969130

7 June 1989 Applications Of High Speed Pulsed-Laser Interferometry

Osuk Y. Kwon, Dean M. Shough

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969130
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

Abstract

Recently a new class of phase-shifting interferometers have been developed that allow us to measure optical phases with high temporal variations. A stationary diffraction grating plays the key role to split the input beam into 0, +1, and -1 orders and simultaneously to introduce a phase shift among the multiplexed beams. This simultaneous phase shift provides the capability for instantaneous measurement of optical wavefronts by using pulsed-lasers. The theoretical basis for the phase shifting interferometry will be introduced briefly. Also results of laboratory measurements will be shown for examples such as the wavefront quality of a pico-second pulsed-laser beam, surface figure measurement of an actuated deformable mirror, and the air turbulence induced by high pressure air flow at different temperatures and flow speeds.

Citation Download Citation

Osuk Y. Kwon and Dean M. Shough "Applications Of High Speed Pulsed-Laser Interferometry", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969130

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