Abstract
We present a hydrogen sensor based on metallic photonic crystal slabs. Tungsten trioxide () is used as a waveguide layer below an array of gold nanowires. Hydrogen exposure influences the optical properties of this photonic crystal arrangement by gasochromic mechanisms, where the photonic crystal geometry leads to sharp spectral resonances. Measurements reveal a change of the transmission depending on the hydrogen concentration. Theoretical limits for the detection range and sensitivity of this approach are discussed.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Ying Wang, D. N. Wang, Fan Yang, Zhi Li, and Minghong Yang
Opt. Lett. 39(13) 3872-3875 (2014)
Timothy J. Palinski, Gary W. Hunter, Amogha Tadimety, and John X. J. Zhang
Opt. Express 27(11) 16344-16359 (2019)
Christopher Kang, Christopher T. Phare, Yurii A. Vlasov, Solomon Assefa, and Sharon M. Weiss
Opt. Express 18(26) 27930-27937 (2010)