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22 August 1988 Crosstalk Characteristics Of Multichannel Acousto-Optic Bragg Cells
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Abstract
A detailed characterization of crosstalk was carried out for two 32-channel. Te02 Bragg cells: one operated at 95 MHz, the other at 400 MHz. A survey showed that the two cells were state-of-the-art devices. Crosstalk was visualized and measured radiometrically in a Schlieren imaging setup. Both qualitative and quantitative results were obtained. Results showed that, when neighboring channels were activated, acoustic crosstalk due to beam spreading was the major source, especially when all the channels are driven by coherent rf signals. Acoustic crosstalk varies from zero at the transducer to about 10 dB below the maximum beam intensity. Radio frequency crosstalk was also measured. It amounted to -25 dB in the 95-MHz cell and -35 dB in the 400-MHz cell. Possible methods of further reducing the crosstalk were given and suggestions for future work were made.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shih-Chun Lin "Crosstalk Characteristics Of Multichannel Acousto-Optic Bragg Cells", Proc. SPIE 0936, Advances in Optical Information Processing III, (22 August 1988); https://doi.org/10.1117/12.946922
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