Biaxial AOTF transfer functions for spatial image filtering

被引：0
|
作者：
Kupreychik, Maxim I. [1 ,2 ]
Chizhikov, Alexander I. [2 ]
Yushkov, Konstantin B. [2 ]
机构：
[1] Lomonosov Moscow State Univ, Fac Phys, 1 Leninskie Gory, Moscow 119049, Russia
[2] Natl Univ Sci & Technol MISIS, Acoustoopt Res Ctr, 4 Leninsky prospekt, Moscow 119049, Russia
来源：
ADVANCED OPTICAL IMAGING TECHNOLOGIES V | 2023年 / 12316卷
基金：
俄罗斯科学基金会;
关键词：
acousto-optics; biaxial crystal; transfer function; spatial frequency; CRYSTAL;
D O I：
10.1117/12.2641893
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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页数：6
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