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Proceedings Paper

TeO2 slow surface acoustic wave Bragg cell
Author(s): Shi-Kay Yao
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Paper Abstract

A newly discovered slow acoustic surface wave (SAW) on a (-110) cut TeO2 surface is reported focusing on its properties studied using a PC based numerical method. It is concluded that the slow SAW is rather tolerant to crystal surface orientation errors and has unusually deep penetration of its shear component into the thickness of substrate, about 47 wavelengths for a half amplitude point. The deep shear field is considered to be beneficial for surface acoustooptic interaction with free propagating focused laser beams. Rotation of the substrate about the z-axis makes it possible to adjust a slow SAW velocity with the potential advantage of trading acoustic velocity for less acoustic attenuation. Wider-bandwidth long signal processing time Bragg cells may be feasible utilizing this trade-off. The slow SAW device is characterized by an extremely low power consumption which might be useful for compact portable or avionics signal processing equipment applications.

Paper Details

Date Published: 1 August 1991
PDF: 8 pages
Proc. SPIE 1476, Optical Technology for Microwave Applications V, (1 August 1991); doi: 10.1117/12.45589
Show Author Affiliations
Shi-Kay Yao, Optech Lab. (United States)


Published in SPIE Proceedings Vol. 1476:
Optical Technology for Microwave Applications V
Shi-Kay Yao, Editor(s)

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