Jull, EI orcid.org/0000-0003-3228-1348 and Gleeson, HF orcid.org/0000-0002-7494-2100 (2017) Tuneable and switchable liquid crystal laser protection system. Applied Optics, 56 (29). pp. 8061-8066. ISSN 1559-128X
Abstract
The use of a liquid crystal Lyot filter as a simple and compact switchable laser protection system is demonstrated. The system OFF state exhibits a wavelength-independent transmission and switches to an ON state, which rejects a selected wavelength. The response time of the switchable system is <110 ms<110 ms, depending on the rejected wavelength, with the ability for faster switching of <5 ms<5 ms when using a lower-order rejection band. A rejection tuning range between 480 and 640 nm is demonstrated, and the potential to operate outside of the visible spectrum is discussed. In the ON state, the transmission at the rejected wavelength was found to be effectively limited by the polarizer extinction ratio, while transmission at other wavelengths allows for partial observations through the system even when in protection mode.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Optical Society of America. This is an author produced version of a paper published in Applied Optics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Liquid crystal filter; Lyot filter; Laser protection |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Soft Matter Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 Sep 2017 09:12 |
Last Modified: | 16 Dec 2024 09:44 |
Status: | Published |
Publisher: | Optical Society of America |
Identification Number: | 10.1364/AO.56.008061 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121787 |