Measuring and testing – Vibration – By mechanical waves
Patent
1980-10-28
1982-06-08
Ciarlante, Anthony V.
Measuring and testing
Vibration
By mechanical waves
73601, 330 55, G01N 2900
Patent
active
043333443
ABSTRACT:
A crystalline bar is doped with a rare earth. The bar is transparent to ration, such as from a laser, at a light wavelength which excites the rare earth ions in the bar and the light is modulated at the frequency at which the bar mechanically resonates.
The excited ion decay radiatively by light or non-radiatively by phonons. As the phonons decay, they excite the bar to resonate mechanically. The mechanical resonance may be coupled by a piezoelectric material and measured to give information respecting the phonon activity of the excited rare earth ions.
REFERENCES:
patent: 3583212 (1971-06-01), Nanney et al.
Morrison Clyde A.
Sattler Joseph P.
Ciarlante Anthony V.
Edelberg Nathan
Elbaum Saul
Gibson Robert P.
The United States of America as represented by the Secretary of
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