@inproceedings{1405f6b9a4b54bd896ec1ca18cdc6b9c,
title = "Reflection-absorption infrared spectroscopy of thin films using an external cavity quantum cascade laser",
abstract = "We present experimental demonstrations using a broadly tunable external cavity quantum cascade laser (ECQCL) to perform Reflection-Absorption InfraRed Spectroscopy (RAIRS) of thin layers and residues on surfaces. The ECQCL compliance voltage was used to measure fluctuations in the ECQCL output power and improve the performance of the RAIRS measurements. Absorption spectra from self-assembled monolayers of a fluorinated alkane thiol and a thiol carboxylic acid were measured and compared with FTIR measurements. RAIRS spectra of the explosive compounds PETN, RDX, and tetryl deposited on gold substrates were also measured. Rapid measurement times and low noise were demonstrated, with <1E-3 absorbance noise for a 10 second measurement time.",
keywords = "Infrared spectroscopy, complex refractive index, explosives detection, quantum cascade laser, tunable laser",
author = "Phillips, {Mark C.} and Craig, {Ian M.} and Blake, {Thomas A.}",
year = "2013",
doi = "10.1117/12.2002849",
language = "English (US)",
isbn = "9780819494009",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Quantum Sensing and Nanophotonic Devices X",
note = "Quantum Sensing and Nanophotonic Devices X ; Conference date: 03-02-2013 Through 07-02-2013",
}