Biaxial AOTF transfer functions for spatial image filtering

Maxim I. Kupreychik; Alexander I. Chizhikov; Konstantin B. Yushkov

doi:10.1117/12.2641893

30 December 2022 Biaxial AOTF transfer functions for spatial image filtering

Maxim I. Kupreychik, Alexander I. Chizhikov, Konstantin B. Yushkov

Proceedings Volume 12316, Advanced Optical Imaging Technologies V; 1231603 (2022) https://doi.org/10.1117/12.2641893
Event: SPIE/COS Photonics Asia, 2022, Online Only

Abstract

Biaxial crystals offer a huge advantage for design of acousto-optic tunable filters (AOTFs) because of a variety of two-dimensional transfer functions. Special configurations of noncritical phase matching of anisotropic Bragg diffraction offer the transfer functions suitable for tunable spatial filtering of laser beams, which can be used for phase imaging and laser beam shaping. We analyze special configurations of AOTFs in alpha-iodic acid (orthorhombic system) and potassium yttrium tungstate (monoclinic system) crystals and demonstrate unique two-dimensional transfer functions, which originate from symmetries of the biaxial crystals' refractive index surface. The results include transfer function simulations and corresponding configuration analysis for AOTF design.

Citation Download Citation

Maxim I. Kupreychik, Alexander I. Chizhikov, and Konstantin B. Yushkov "Biaxial AOTF transfer functions for spatial image filtering", Proc. SPIE 12316, Advanced Optical Imaging Technologies V, 1231603 (30 December 2022); https://doi.org/10.1117/12.2641893

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