THz spectroscopy with an absolute frequency scale by a QCL phase-locked to a THz frequency comb

Year: 2013

Authors: Consolino L., Bartalini S., Taschin A., Bartolini P., Cancio P., De Pas M., Beere H.E., Ritchie D.A., Vitiello M.S., Torre R., De Natale P.

Autors Affiliation: Istituto Nazionale di Ottica (INO), CNR, Largo E. Fermi 6, Firenze I-50125, Italy; LENS, European Laboratory for NonLinear Spectroscopy, Via N. Carrara 1, Sesto Fiorentino (FI) I-50019, Italy; NEST, Istituto Nanoscienze – CNR, Scuola Normale Superiore, Piazza San Silvestro 12, Pisa I-56127, Italy; Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom; Dipartimento di Fisica e Astronomia, Universita di Firenze, Via C. Sansone 1, Sesto Fiorentino, Firenze I-50019, Italy

Abstract: The exploitation of a THz frequency comb for absolutely-referenced THz spectroscopy is presented. The frequency of a 2.5-THz QCL, phase-locked to the comb, is swept across a methanol line, providing the spectroscopy with and absolute-frequency scale. © 2013 IEEE.

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More Information: Sponsors: Fraunhofer Inst Phys Measurement Tech IPM; Univ Kaiserslautern; IEEE Microwave Theory & Tech Soc; State Rhineland Palatinate, Minist Sci & Educ; OPTIMAS; Xiton Photon GmbH; Univ Kaiserslautern, Fac Phys; HUBNER; Edinburgh Instruments; Lake Shore; Anritsu Corp; Innovat Ctr Appl Syst Modeling; Optence; TRAS Inc; Advantest; Edmund Opt
KeyWords: Absolute frequency; THz frequencies; Thz spectroscopy, Excitons; Terahertz waves, Terahertz spectroscopy
DOI: 10.1109/IRMMW-THz.2013.6665715