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3 October 2022 Light-fueled dye-doped liquid crystal systems for deformable low-threshold optical limiter (Conference Presentation)
Atsushi Shishido
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Proceedings Volume PC12212, Molecular and Nano Machines V; PC122120A (2022) https://doi.org/10.1117/12.2635840
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
Optical limiting is the phenomenon widely recognized as the potential application for a protector of human eyes and optical sensors from irradiation with lasers. However, much high optical limiting threshold and less flexibility have restricted such applications. Here, we report that oligothiophene-doped liquid crystals (LCs) function as a low-threshold optical limiter with deformability. Irradiation of dye-doped LCs with a continuous wave (CW) laser beam brings about the formation of diffraction rings, and the number of rings changes depending on the incident light intensity due to their photoinduced molecular reorientation. Utilizing such reorientation enables reversible optical limiting without additional multilayered optical components. Furthermore, softness of LCs allows for the fabrication of the deformable optical limiter; optical limiting due to the molecular reorientation occurs even in largely bent states. The low-threshold and deformable optical limiter based on oligothiophene-doped LCs thus will enable one to develop the protector of eyes and optical sensors from glaring-light-induced damage.
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© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Atsushi Shishido "Light-fueled dye-doped liquid crystal systems for deformable low-threshold optical limiter (Conference Presentation)", Proc. SPIE PC12212, Molecular and Nano Machines V, PC122120A (3 October 2022); https://doi.org/10.1117/12.2635840
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KEYWORDS
Liquid crystals
Optical limiting
Continuous wave operation
Optical sensors
Diffraction
Molecular lasers
Multilayers
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