Photodetector with photothermal cascaded Fabry-Perot etalons
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(Published version)
Date
2017
Authors
Chen, G.Y.
Wu, X.
Liu, X.
Lancaster, D.G.
Monro, T.M.
Xu, H.
Editors
Chung, Y.
Jin, W.
Lee, B.
Canning, J.
Nakamura, K.
Yuan, L.
Jin, W.
Lee, B.
Canning, J.
Nakamura, K.
Yuan, L.
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Conference paper
Citation
Proceedings of SPIE, 2017 / Chung, Y., Jin, W., Lee, B., Canning, J., Nakamura, K., Yuan, L. (ed./s), vol.10323, iss.103230F, pp.1-4
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Conference Name
25th International Conference on Optical Fiber Sensors (24 Apr 2017 - 28 Apr 2017 : Jeju, South Korea)
Abstract
A new type of photodetector with an optical sensor is presented, which enables it to operate even in the presence of strong electro-magnetic interference. The optical sensor head consists of cascaded Fabry-Perot etalons coated with a new type of photo-thermal coating comprising of hydrogel-embedded copper-oxide micro-particles. For white-light irradiation, the photodetector exhibits a power sensitivity of 760 pm/mW, a detection limit of 16.4 μW, and an optical damage threshold of ∼100 mW or ∼800 mW/cm2. The response and recovery times are 3.0 s (∼90% of change within 100 ms) and 16.0 s.
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Copyright 2017 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.