Terahertz control of air lasing

Clerici, M, Bruhács, A, Faccio, D, Peccianti, M, Spanner, M, Markov, A, Schmidt, B E, Ozaki, T, Légaré, F, Vidal, F and Morandotti, R (2019) Terahertz control of air lasing. Physical Review A (PRA), 99 (5). a053802. ISSN 2469-9926

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Abstract

The coherent emission from ionized nitrogen molecules is of interest for remote sensing and astronomical applications. To initiate the lasing process, we used an intense ultrashort near-infrared (NIR) pulse overlapped with a terahertz (THz) single-cycle pulse. We observed that coherent emission could be seeded and modulated by the amplitude of the THz field, which is the result of a combined effective second-order nonlinear polarization and the nonlinear effects induced by the NIR pump. Our results shed light on the role of intense transient fields in the coherent emission from photoexcited gas molecules.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Sussex Centre for Quantum Technologies
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Marco Peccianti
Date Deposited: 30 Aug 2019 15:32
Last Modified: 30 Aug 2019 15:45
URI: http://sro.sussex.ac.uk/id/eprint/85781

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Project NameSussex Project NumberFunderFunder Ref
TIMING: Time-Resolved Nonlinear Ghost ImagingG2016EUROPEAN UNION725046