Generalized theory of phased-array Bragg interaction in a birefringent medium and its application to TeO2 for intermodulation product reduction

Manhar L. Shah; Dennis R. Pape

doi:10.1117/12.139893

24 August 1992 Generalized theory of phased-array Bragg interaction in a birefringent medium and its application to TeO₂ for intermodulation product reduction

Manhar L. Shah, Dennis R. Pape

Author Affiliations +

Proceedings Volume 1704, Advances in Optical Information Processing V; (1992) https://doi.org/10.1117/12.139893
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

The phased array transducer and birefringent Bragg interaction provide a unique combination of features not available with the usual acoustical or optical rotation schemes in slow shear TeO₂. A general theory for phased array Bragg interaction in a birefringent medium is presented. A 50 MHz bandwidth slow shear TeO₂ Bragg cell was constructed using this theory. Excellent match between the designed and observed frequency band was obtained. As a result of the strong anisotropy of the acoustic velocity, we were able to reduce the intermodulation products by removing the negative first-order acoustic beam from the optical interaction region. The limitation in performance imposed by previous slow shear TeO₂ designs using either optical or acoustical rotation are eliminated.

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Manhar L. Shah and Dennis R. Pape "Generalized theory of phased-array Bragg interaction in a birefringent medium and its application to TeO₂ for intermodulation product reduction", Proc. SPIE 1704, Advances in Optical Information Processing V, (24 August 1992); https://doi.org/10.1117/12.139893

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