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Proceedings Paper

Investigation of higher-order diffraction in a one-crystal 2-D scanner
Author(s): Nathan T. Melamed; Milton S. Gottlieb
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Paper Abstract

A one-crystal 2-D scanner using the circular birefringence of tellurium dioxide was designed, built, and characterized. A scan angle of approximately 4 to 5 degrees was obtained along each axis for an acoustic frequency range of about 30 to 80 MHz. The intensities of the higher order beams were in the range of 10-2 to 10-4 relative to the first order intensity. The intensity of the second order beam was studied as a function of transducer length and frequency. The authors found a rough agreement based on (1) the diffraction spread of the acoustic beam, and (2) the slope of (theta) i vs frequency, d(theta) i/df, which is a measure of the tolerance of the input beam angle phase matching conditions to small angular deviations.

Paper Details

Date Published: 1 February 1991
PDF: 7 pages
Proc. SPIE 1454, Beam Deflection and Scanning Technologies, (1 February 1991); doi: 10.1117/12.28046
Show Author Affiliations
Nathan T. Melamed, Westinghouse Science and Technology Ctr. (United States)
Milton S. Gottlieb, Westinghouse Science and Technology Ctr. (United States)


Published in SPIE Proceedings Vol. 1454:
Beam Deflection and Scanning Technologies
Leo Beiser; Gerald F. Marshall, Editor(s)

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