System and method to decrease probe size for improved laser...

Details System and method to decrease probe size for improved laser... System and method to decrease probe size for improved laser...

2004-12-21

2009-08-18

Punnoose, Roy M (Department: 2886)

Optics: measuring and testing

Inspection of flaws or impurities

C356S614000

Reexamination Certificate

active

07576848

ABSTRACT:
The present invention provides a compact optical probe assembly that measures ultrasound in materials. The probe uses angle-terminated optical fiber to direct illumination laser light at the surface of a remote target. Ultrasonic displacements at the surface scatter the illumination laser light. Angle-terminated optical fibers collect phase modulated light and direct the phase modulated light to an optical processor to produce a signal representative of the ultrasonic surface displacements. The probe may also incorporate angle-terminated optical fibers to direct generation laser light to the surface of a remote target to generate ultrasonic surface displacements. Optional shared beam forming element(s) may optically act on the illumination laser and collected phase modulated light.

REFERENCES:
patent: 4581939 (1986-04-01), Takahashi
patent: 4659224 (1987-04-01), Monchalin
patent: 6609425 (2003-08-01), Ogawa
patent: 6657733 (2003-12-01), Drake, Jr.
patent: 2005/0023434 (2005-02-01), Yacoubian
patent: 2006/0215174 (2006-09-01), Dubois et al.

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