A Terahertz VRT spectrometer employing quantum cascade lasers

Autor:	Alan W. M. Lee, Richard J. Saykally, Tsung-Yu Kao, Nikolaus C. Hlavacek, John L. Reno, Qing Hu, William T. S. Cole
Rok vydání:	2015
Předmět:	Technology Chemical Physics Spectrometer Chemistry business.industry Terahertz radiation Detector Far-infrared laser Quantum noise General Physics and Astronomy Laser law.invention Photomixing Optics Cascade law Physical Sciences Chemical Sciences Physical and Theoretical Chemistry business
Zdroj:	Cole, WTS; Lee, AWM; Kao, TY; Hu, Q; Reno, JL; Saykally, RJ; et al.(2015). A Terahertz VRT spectrometer employing quantum cascade lasers. Chemical Physics Letters, 638, 144-148. doi: 10.1016/j.cplett.2015.08.027. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/80j001jr
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2015.08.027
Popis:	© 2015 Elsevier B.V. All rights reserved. The first application of a commercial Terahertz quantum cascade laser (QCL) system for high resolution spectroscopy of supersonic beams is presented. The QCLs exhibited continuous linear voltage tuning over a 2 GHz range about a center frequency of 3.762 THz with ∼1 ppm resolution. A sensitivity of ∼1 ppm fractional absorption was measured with a single pass optical system. Multipass operation at the quantum noise limit of the stressed photoconductor detector would produce a 100-fold improvement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5406f535c9a9d363da198043ccc5ad6 https://doi.org/10.1016/j.cplett.2015.08.027 Zobrazit plný text záznamu Full Text from ScienceDirect