Resonant nonlinear refraction of 4.3-μm light in CO2 gas

Pigeon, Jeremy J.; Tovey, D.; Tochitsky, S. Ya.; Louwrens, G. J.; Ben-Zvi, I.; Martyshkin, D.; Fedorov, V.; Karki, K.; Mirov, S.; Joshi, C.

doi:10.1103/physreva.100.011803

Resonant nonlinear refraction of 4.3-μm light in CO₂ gas

Journal Article · Tue Jul 30 00:00:00 EDT 2019 · Physical Review A

DOI:https://doi.org/10.1103/physreva.100.011803· OSTI ID:1612960

Pigeon, Jeremy J. ^[1]; Tovey, D. ^[2]; Tochitsky, S. Ya. ^[2]; Louwrens, G. J. ^[2]; Ben-Zvi, I. ^[3]; Martyshkin, D. ^[4]; Fedorov, V. ^[4]; Karki, K. ^[4]; Mirov, S. ^[4]; Joshi, C. ^[2]

Stony Brook Univ., NY (United States); DOE/OSTI
Univ. of California, Los Angeles, CA (United States)
Stony Brook Univ., NY (United States)
Univ. of Alabama, Birmingham, AL (United States)

Here, we use time- and frequency-resolved measurements of self-focusing and self-defocusing of 4.3-μm radiation in CO₂ gas to study the resonant nonlinear optical response in the vicinity of individual rovibrational lines. Measurements over a range of lines on the 4P and 4R branch of the 000-001 transition indicate that the nonlinear response of CO₂ is strongly affected by power broadening, resulting in a sign reversal of the nonlinearity as compared to that of a saturable two-level system.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Alabama, Birmingham, AL (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC)

Grant/Contract Number:: SC0018378

OSTI ID:: 1612960

Alternate ID(s):: OSTI ID: 1545943

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 100; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

Ionization-free resonantly enhanced low-order harmonic generation in a dense gas mixture by a mid-IR laser field Migal, E. A.; Stremoukhov, S. Yu.; Potemkin, F. V. Physical Review A, Vol. 101, Issue 2 https://doi.org/10.1103/physreva.101.021401	journal	February 2020

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