Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1999-06-30
2000-09-19
Kim, Robert H.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356432, 356345, G01B 902
Patent
active
061220604
ABSTRACT:
The present invention detects ultrasonic displacements includes a detection laser to generate a first pulsed laser beam to detect the ultrasonic surface displacements on a surface of the target. Collection optics to collect phase modulated light from the first pulsed laser beam either reflected or scattered by the target. An optical amplifier which amplifies the phase modulated light collected by the collection optics. An interferometer which processes the phase modulated light and generate at least one output signal. A processor that processes the at least one output signal to obtain data representative of the ultrasonic surface displacements at the target.
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Kim Robert H.
Lockheed Martin Corporation
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