Pavel Fomitchov

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An intrinsic multiplexed laser interferometer is presented that allows for the simultaneous detection of acoustic waves by an array of fiber-optic sensors. The phase-modulated signals from each sensor are demodulated by use of an adaptive two-wave mixing setup. The light from each sensing fiber in the array is mixed with a reference beam in a single(More)
The Scanning Laser Source (SLS) technique described in this paper enables non-contact high-resolution imaging of damage in sandwich composite structures. In the SLS technique, ultrasound is generated using a pulsed YAG:Nd laser that is scanned over the structure to be inspected. Both conventional piezo-electric transducers and laser interferometers can be(More)
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