Intermodulation suppression in slow shear TeO2 Bragg cells using a phased array transducer

Manhar L. Shah; Dennis R. Pape

doi:10.1117/12.21276

1 September 1990 Intermodulation suppression in slow shear TeO₂ Bragg cells using a phased array transducer

Manhar L. Shah, Dennis R. Pape

Proceedings Volume 1296, Advances in Optical Information Processing IV; (1990) https://doi.org/10.1117/12.21276
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

A technique for the measurement of acousto-optic intermodulation products and the the improved dynamic range performance of a Gaussian weighted phased array slow shear Te02 50 MHz bandwidth Bragg cell are reported. The intermodulation products caused by the nonlinear acousto-optic interaction dominated over those caused by the elastic nonlinearity for most of the 50 μs cell length except near the end. This represents an improvement over the conventional transducer design where the nonlinear elastically generated intermodulation products dominate and limit the device dynamic range. The interferometric measurement system had over 50 dB of dynamic range and could easily display all of the two tone intermodulafion products with a standard RF spectrum analyzer.

Citation Download Citation

Manhar L. Shah and Dennis R. Pape "Intermodulation suppression in slow shear TeO₂ Bragg cells using a phased array transducer", Proc. SPIE 1296, Advances in Optical Information Processing IV, (1 September 1990); https://doi.org/10.1117/12.21276

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