Acoustic field structure simulation in quasi-collinear acousto-optic cells with ultrasound beam reflection

S N Mantsevich; V Ya Molchanov; K B Yushkov; V S Khorkin; M I Kupreychik

doi:10.1016/j.ultras.2017.03.018

Acoustic field structure simulation in quasi-collinear acousto-optic cells with ultrasound beam reflection

Ultrasonics. 2017 Jul:78:175-184. doi: 10.1016/j.ultras.2017.03.018. Epub 2017 Apr 2.

Authors

S N Mantsevich¹, V Ya Molchanov², K B Yushkov², V S Khorkin³, M I Kupreychik³

Affiliations

¹ Physics Department, M.V. Lomonosov Moscow State University, GSP-2, Vorobevy Gory, 119991 Moscow, Russia. Electronic address: snmantsevich@yahoo.com.
² National University of Science and Technology "MISIS", Leninsky Prospect 4, Moscow 119049, Russia.
³ Physics Department, M.V. Lomonosov Moscow State University, GSP-2, Vorobevy Gory, 119991 Moscow, Russia.

PMID: 28395212
DOI: 10.1016/j.ultras.2017.03.018

Abstract

Ultrasound wave reflection from one of the crystal faces is the convenient way to arouse the acoustic beam with a desired propagation direction in acousto-optic cells with collinear and quasi-collinear interaction geometries. The reflection process effects on the ultrasound field amplitude and phase structure. The method to simulate the reflected finite ultrasound beam structure in the case of acoustically anisotropic media is presented in this paper. The investigation is carried on the example of two quasi-collinear acousto-optic cells fabricated on the base of tellurium dioxide crystal. The cells have special geometry that allows to obtain extremely long acousto-optic interaction length and to achieve unprecedented spectral resolution. The influence of reflection process in the acousto-optic diffraction characteristics was also examined.

Keywords: Acoustic beam structure; Acousto-optic interaction; Angular spectrum; Media anisotropy; Paratellurite; Quasi-collinear diffraction geometry; Ultrasound beam reflection.

Publication types

Research Support, Non-U.S. Gov't