Optical vibrometer based on Laser Diode Self-Mix Interferometry (SMI) is the elective choice in non-invasive vibration monitoring. We present an instrument aimed at measurement of small amplitude (10 nm < s < 1 μm) vibrations at very low frequency, below 10–3 Hz. Intended application is in situ vibration monitoring of artwork, e.g. during 3D surface topography aimed at indentification of the original piece to counteract forgery of the artwork, or to prevent or detect theft during transportation before/after an exhibition. In the intended application, long term stability and glitch-free operation are required.
SELF-MIXING LASER DIODE VIBROMETER FOR VERY LOW FREQUENCY APPLICATIONS
MARTINI, GIUSEPPE;RANDONE, ENRICO MARIA;DONATI, SILVANO
2013-01-01
Abstract
Optical vibrometer based on Laser Diode Self-Mix Interferometry (SMI) is the elective choice in non-invasive vibration monitoring. We present an instrument aimed at measurement of small amplitude (10 nm < s < 1 μm) vibrations at very low frequency, below 10–3 Hz. Intended application is in situ vibration monitoring of artwork, e.g. during 3D surface topography aimed at indentification of the original piece to counteract forgery of the artwork, or to prevent or detect theft during transportation before/after an exhibition. In the intended application, long term stability and glitch-free operation are required.File in questo prodotto:
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