Optical vibration detection spectral analysis assembly and metho

Details Optical vibration detection spectral analysis assembly and metho Optical vibration detection spectral analysis assembly and metho

1997-01-22

1998-10-27

Williams, Hezron E.

Measuring and testing

Vibration

Sensing apparatus

73656, 356347, 356349, 359240, G01B 902, G01H 900

Patent

active

058279717

ABSTRACT:
A vibration detection assembly is described which includes an emitter of light which has object and reference beams, the object beam reflected off of a vibrating object of interest; and a photorefractive substance having a given response time and which passes the reflected object beam and the reference beam, the reference beam and the object beam interfering within the photorefractive substance to create a space charge field which develops within the response time of the photorefractive substance.

REFERENCES:
patent: 4284324 (1981-08-01), Huignard et al.
patent: 4304458 (1981-12-01), Huignard et al.
patent: 4492468 (1985-01-01), Huignard et al.
patent: 5130849 (1992-07-01), Valley et al.
patent: 5303031 (1994-04-01), Khoury et al.
patent: 5335062 (1994-08-01), Hofmeister et al.
patent: 5335548 (1994-08-01), Kalibjian
Hale, et al, "Vibration Modal Analysis Using All-Optical Photorefractive Processing", Proceedings of 1996 SPIE Photorefractive Fiber and Crystal Devices Conference, Denver, CO, Aug. 4-9 1996, vol. 2849, pp. 300-307.
Chatters, et al, "Optical Lock-In Vibration Detection Using Photorefractive Four-Wave Mixing", Review of Progress in Quatitative Nondestructive Evaluation, vol. 15, pp. 2165-2171. Jun. 1996.
Huignard, et al, "Two-Wave Mixing and Energy Transfer in Bi.sub.12 SiO.sub.20 Crastals: Application to Image Amplification and Vibration Analysis", Optic Letters, vol. 6, No. 12, pp. 622-624, Dec. 1981.
Hale, et al, "Optical Lock-In Vibration Detection Using Photorefractive Frequency Domain Processing", Applied Physics Letters, vol. 69, pp. 2632-2634, Oct. 28 1996.
Hofmeister, et al, "Vibration Detection Using Dynamic Photorefractive Gratings in KTN/KLTN Crystals", Applied Physics Letters, vol. 61, pp. 2395-2397, Nov. 16, ,1992.
Rohleder, et al, "Quantitative Measurement of the Vibrational Amplitude and Phase in Photorefractive Tie-Average Interferometry: A Comparison with Electronic Speckle Pattern Interferometry", Journal of Applied Physics, vol. 76, No. 1, pp. 81-84, Jul. 1, 1994.
Khoury, et al, "Photorefractive Optical Lock-In Detector", Optic Letters, vol. 16, No. 18, pp. 1442-1444, Sep. 15, 1991.

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