On a half-forgotten but very powerful method for coherent spectroscopy of molecules

A.A. Makarov^a, b, E.A. Ryabov^a
^aInstitute of Spectroscopy, Russian Academy of Sciences, ul. Fizicheskaya 5, Troitsk, Moscow, 108840, Russian Federation
^bHSE University, ul. Myasnitskaya 20, Moscow, 101000, Russian Federation

The sum-frequency generation involving two infrared laser quanta and a single visible-range laser quantum is a four-wave mixing process that is virtually not used in practice. Nevertheless, this process provides an extremely high selectivity with respect to the Q-branch of the two-photon vibrational transition in molecules. We explore here two publications, one that is more than thirty years old and another that appeared in 2018, to show broad potential applications of the method. The objective reasons due to which that potential has not been used so far are discussed.

Keywords: sum frequency generation, two-photon resonance, infrared spectroscopy of molecules
PACS: 33.20.Ea, 42.62.Fi, 42.65.−k (all)
DOI: 10.3367/UFNe.2018.12.038492
URL: https://ufn.ru/en/articles/2019/3/c/
Web of Science

000469214700003
Scopus

2-s2.0-85069429219
ADS NASA

2019PhyU...62..257M
Citation: Makarov A A, Ryabov E A "On a half-forgotten but very powerful method for coherent spectroscopy of molecules" Phys. Usp. 62 257–265 (2019)

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Received: 11th, July 2018, revised: 5th, December 2018, accepted: 6th, December 2018

Оригинал: Макаров А А, Рябов Е А «Об одном полузабытом, но весьма мощном методе когерентной спектроскопии молекул» УФН 189 271–280 (2019); DOI: 10.3367/UFNr.2018.12.038492

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