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Acousto-Optical Spectral Technologies (2nd Edition)
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Acousto-Optical Spectral Technologies (2nd Edition)

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 1130

Special Issue Editors

Dr. Alexander S. Machikhin

E-Mail Website
Guest Editor
Laboratory of Acousto-Optic Spectroscopy, Scientific and Technological Center of Unique Instrumentation, Russian Academy of Sciences, 117342 Moscow, Russia
Interests: acousto-optics; spectral imaging; image processing; digital holography
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Vitold Pozhar

E-Mail Website
Guest Editor
Laboratoty of Acousto-Optic Spectroscopy, Scientific and Technological Center of Unique Insrumentation, Russian Academy of Sciences, 117342 Moscow, Russia
Interests: acousto-optics; spectroscopy; spectral imaging; acousto-optical materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome. Acousto-optic technologies have increasingly attracted the attention of scientists and engineers. Acousto-optic interactions have become the flexible basis of compact and robust devices for the analysis of the intensity, spectrum, polarization, and other properties of light. In this Special Issue, modern trends of acousto-optical spectral technologies, including the fundamentals and optimization of existing techniques, are highlighted and discussed.

This Special Issue will deal with research including but not restricted to the following:

  • Acousto-optic materials and structures for UV, visible, IR, and THz ranges;
  • Theoretical and experimental studies of light diffraction by ultrasonic waves;
  • Acousto-optic and photoacoustic spectroscopy;
  • Spectral imaging and tomography;
  • Multispectral and hyperspectral acousto-optic imagers;
  • Acousto-optic image and signal processing;
  • Acousto-optic interference techniques;
  • Novel applications in remote sensing, biomedicine, and industry.

This Special Issue also provides a forum for reports on technical developments that allow the spectral analysis of various objects. The goal of this Special Issue is to give readers an overview of the hot topics and the state of the art regarding the applications of acousto-optic spectroscopy techniques.

Dr. Alexander S. Machikhin
Prof. Dr. Vitold Pozhar
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • acousto-optics
  • acousto-optical materials
  • bragg diffraction
  • acousto-optic spectroscopy
  • spectral imaging
  • acousto-optic devices
  • acousto-optic image processing
  • microscopy and tomography

Published Papers (2 papers)

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Research

12 pages, 2613 KiB  
Article
Analysis of Phase Mismatch for Mercurous Bromide-Based Non-Collinear AOTF Design in Spectral Imaging Applications
by Huijie Zhao, Chi Cheng, Qi Guo, Rui Ma and Yutian Yang
Materials 2024, 17(7), 1703; https://doi.org/10.3390/ma17071703 - 8 Apr 2024
Viewed by 388
Abstract
The spectral and spatial characteristics of Acousto-Optic Tunable Filters (AOTFs), such as a tuning curve, spectral resolution, angular aperture, and diffraction efficiency, are determined by the device’s acousto-optic crystal configuration and piezoelectric transducer. For high-throughput spectral imaging applications, it is essential to enlarge [...] Read more.
The spectral and spatial characteristics of Acousto-Optic Tunable Filters (AOTFs), such as a tuning curve, spectral resolution, angular aperture, and diffraction efficiency, are determined by the device’s acousto-optic crystal configuration and piezoelectric transducer. For high-throughput spectral imaging applications, it is essential to enlarge the spectral bandwidth and angular aperture during the design phase of AOTFs. Thus, phase mismatch due to incident angle or wavelength was studied analytically using phase diagrams in this paper. Additionally, a performance parameter analysis model was established based on the use of mercurous bromide crystals for large angular aperture AOTF device design, and the impact of crystal and transducer design parameters on the spectral bandwidth and angular aperture was evaluated. This also experimentally validates the diffraction capability of AOTFs made from mercurous bromide crystal, which possess a broad spectral transmission ability ranging from visible to long-wave infrared. Full article
(This article belongs to the Special Issue Acousto-Optical Spectral Technologies (2nd Edition))
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14 pages, 3827 KiB  
Article
Angular-Spectral Characteristics of Acousto-Optic Tunable Filters Based on Mercurous Halide Crystals
by Huijie Zhao, Chi Cheng, Qi Guo, Kai Yu and Yutian Yang
Materials 2024, 17(5), 967; https://doi.org/10.3390/ma17050967 - 20 Feb 2024
Cited by 1 | Viewed by 560
Abstract
The angular and spectral properties crucial for the functionality of acousto-optic (AO) devices are determined by phase-matching geometries in AO interactions. In applications such as spectral imagers based on acousto-optic tunable filters (AOTFs), systematic throughput is constrained by the angle separating diffracted and [...] Read more.
The angular and spectral properties crucial for the functionality of acousto-optic (AO) devices are determined by phase-matching geometries in AO interactions. In applications such as spectral imagers based on acousto-optic tunable filters (AOTFs), systematic throughput is constrained by the angle separating diffracted and transmitted light. This research introduces an analytical model that elucidates the angular-spectral properties of diffracted beams in mercurous halide crystals. These crystals possess a wide transmissive spectral range, from visible light to long-wave infrared light. The study computes and confirms correlations between the separation angle and parameters including incident angle, polarization, acoustic angle, and crystal birefringence. Experimental validation conducted on mercurous halide and tellurium dioxide crystals demonstrates that higher birefringence in crystals significantly amplifies the separation angle, augmenting the device’s performance. The study contributes to the development of devices with large separation angles during the design phase, enhancing systematic throughput in spectral imaging applications. Full article
(This article belongs to the Special Issue Acousto-Optical Spectral Technologies (2nd Edition))
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