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22 August 1988 Optically And Acoustically Rotated Slow Shear Bragg Cells In TeO2
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Bragg cells using the slow-shear wave propagating along the [110] direction in Te02 have become widely utilized in the optical signal processing field. Devices with aperture lengths up to 100 gsec have been fabricated using this mode. The center frequencies of such devices have ranged from 50 to 90 MHz with bandwidths ranging from 20 to 60 MHz. For many signal processing applications, however, significant improvement in the Bragg cell performance can be obtained if either an optically rotated or an acoustically rotated variation on the standard crystal cut is used instead of the typical crystal orientation. These slightly varied orientations can result in significant enhancement in diffraction efficiency and dynamic range as well as in allowing the Lre of linear polarization on the input beam. The work presented examines in detail the various physical properties of these special crystal cuts. The paper will also present guidelines as to when one of these crystallographic rotations will yield significant advantage over the standard orientation.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Elston "Optically And Acoustically Rotated Slow Shear Bragg Cells In TeO2", Proc. SPIE 0936, Advances in Optical Information Processing III, (22 August 1988);


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