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Brillouin Scattering from Ultrasonic Microwave Pulses in LiNbO3

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3 Author(s)
Farah, Oscar G. ; The Johns Hopkins University, Baltimore, Maryland 21218 ; Wagner, Peter E. ; Cummins, Herman Z.

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The spatial intensity distribution of 8.9‐GHz longitudinal ultrasonic pulses propagating along the trigonal axis of LiNbO3 has been measured between 80° and 475°K by means of Brillouin scattering. The absolute attenuation coefficient Γ varied from 8±1 dB/cm at 80°K to 31±2 dB/cm at 475°K. Above 150°K, the attenuation could be fitted by Γ=0.53T0.66 dB/cm. Examples are given of other applications of the scattering technique.

Published in:

Journal of Applied Physics  (Volume:40 ,  Issue: 6 )