Title :
Silicon on sapphire chip based mid-infrared optical spectroscopy for detection of chemical warfare simulant Triethyl phosphate
Author :
Wray, Parker ; Yi Zou ; Chakravarty, Sumit ; Chen, Ray T.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Texas at Austin, Austin, TX, USA
Abstract :
Triethyl phosphate (TEP), a chemical warfare simulant, has absorption peaks in the mid-infrared. Using a single mode slot wave guide we were able to detect TEP, with a detection limit down to 75 ppm. This provides enhanced sensitivity while simultaneously achieving device miniaturization.
Keywords :
gas sensors; infrared spectra; integrated optics; optical sensors; optical waveguides; organic compounds; sapphire; silicon; silicon-on-insulator; spectrochemical analysis; Si-Al2O3; TEP; chemical warfare detection; chemical warfare simulant; mid-infrared optical spectroscopy; silicon on sapphire chip; single mode slot waveguide; triethyl phosphate; Absorption; Chemicals; Optical sensors; Optical waveguides; Spectroscopy; Strips; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
