Next Article in Journal
Efficiency Limits of Solar Energy Harvesting via Internal Photoemission in Carbon Materials
Previous Article in Journal
Acknowledgement to Reviewers of Photonics in 2017
Article Menu

Export Article

Open AccessArticle
Photonics 2018, 5(1), 3;

High Throughput AOTF Hyperspectral Imager for Randomly Polarized Light

School of Biomedical Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada
Spectral Applied Research Inc. (A Division of Andor Technology), Richmond Hill, ON L4B 2N3, Canada
Department of Engineering Physics, McMaster University, Hamilton, ON L8S 4K1, Canada
Now with the Department of Biomedical Engineering, Military Technical College, Egypt
Author to whom correspondence should be addressed.
Received: 25 November 2017 / Revised: 25 December 2017 / Accepted: 20 January 2018 / Published: 22 January 2018
Full-Text   |   PDF [2317 KB, uploaded 30 January 2018]   |  


The acousto-optic tunable filter (AOTF) is one of the most used techniques for hyperspectral imaging (HSI), and is capable of fast and random wavelength access, high diffraction efficiency, and good spectral resolution. Typical AOTF-HSI works with linearly polarized light; hence, its throughput is limited for randomly polarized applications such as fluorescence imaging. We report an AOTF-based imager design using both polarized components of the input light. The imager is designed to operate in the 450 to 800 nm region with resolutions in the range of 1.5–4 nm. The performance characterization results show that this design leads to 68% improvement in throughput for randomly polarized light. We also compared its performance against a liquid crystal tunable filter (LCTF)-based imager. View Full-Text
Keywords: hyperspectral imaging; AOTF; LCTF; optical throughput hyperspectral imaging; AOTF; LCTF; optical throughput

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Abdlaty, R.; Orepoulos, J.; Sinclair, P.; Berman, R.; Fang, Q. High Throughput AOTF Hyperspectral Imager for Randomly Polarized Light. Photonics 2018, 5, 3.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Photonics EISSN 2304-6732 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top