Share Email Print
cover

Proceedings Paper

Application of layered structures for mid-infrared acousto-optics
Author(s): I. M. Sopko; G. A. Knyazev; D. O. Ignatyeva; V. I. Belotelov
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Acousto-optical devices, such as deflectors, modulators or filters, provide an effective way of light control and signal processing techniques. However, their operation range is limited to visible and near-infrared wavelengths due to quadratic law of efficiency decrease of acousto-optical interaction with the wavelength increase. Besides, high-quality acousto-optic materials such as TeO2 are non-transparent at wavelengths larger than 5 µm, while the infrared optical materials provide significantly lower acousto-optic quality. Here we demonstrate how these limitations could be overcome by applying of specifically designed multilayered structures with electromagnetic modes strongly coupled to the incident light using Otto configuration of prism coupling. Such approach could be used for a novel acousto-optical device operating at 8-14 μm wavelengths. Acoustic wave is excited via a piezoelectric transducer in the prism provides modulation of the coupling intensity which results in up to 100% modulation of the transmitted light at the spatial scale less than the ultrasound wavelength. Therefore, it provides the possibility to achieve efficient acousto-optical modulation at frequencies over several gigahertz.

Paper Details

Date Published: 11 November 2019
PDF: 7 pages
Proc. SPIE 11210, Fourteenth School on Acousto-Optics and Applications, 112100K (11 November 2019); doi: 10.1117/12.2540975
Show Author Affiliations
I. M. Sopko, M.V. Lomonosov Moscow State Univ. (Russian Federation)
G. A. Knyazev, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Russian Quantum Ctr. (Russian Federation)
D. O. Ignatyeva, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Russian Quantum Ctr. (Russian Federation)
V. I. Belotelov, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Russian Quantum Ctr. (Russian Federation)


Published in SPIE Proceedings Vol. 11210:
Fourteenth School on Acousto-Optics and Applications
Ireneusz Grulkowski; Bogumił B. J. Linde; Martí Duocastella, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray