Flexible fiber optic probe for high-pressure shock experiments

Details Flexible fiber optic probe for high-pressure shock experiments Flexible fiber optic probe for high-pressure shock experiments

1992-03-04

1993-04-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 285, H01J 516

Patent

active

052025586

ABSTRACT:
A fiber optic probe for supplying and collecting instrumentation light in shock experiments. The fiber optic probe comprises two optical fibers and the necessary lens elements to concentrate laser light coming from one of the fibers onto a specimen, and to collect reflected laser light from the specimen into the second fiber. The fibers and lens elements are mounted in a special frame which facilitates better alignment of the lens/fiber arrangement by precise control of the flexing of the fiber optic probe's frame. Improved reflected light gathering efficiency and improved depth of field are achieved by the choices of the optical fiber diameters and by using good optical design practice. Inexpensive components and fabrication techniques allow for the economical use of these probes even when one is destroyed with each experiment.

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M. Durand, "The Use of Optical Fibers for Velocity Measurement by Doppler-Laser Interferometry with Fabry-Perot Interferometer," (English translation of title), in Journees de Detonique 84-Tome 1 (1984).
S. Gidon, G. Garcin, and H. Behar, "Doppler Laser Interferometry with Light Transmission by Two Optical Fibers," from Proceedings of the 16th International Conference on High Speed Photography and Photonics, Strasbourg, France, Aug. 27-30, 1984.

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