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Single-shot local measurement of terahertz correlated second harmonic generation in laser air plasma filaments.

Authors :
Pac Chong ML
Garriga Francis KJ
Yiwen E
Zhang XC
Source :
Optics letters [Opt Lett] 2024 Jan 15; Vol. 49 (2), pp. 226-229.
Publication Year :
2024

Abstract

We present a single-shot detection method of terahertz correlated second harmonic generation in plasma-based sources by directly mixing an optical probe into femtosecond laser-induced plasma filaments in air. The single-shot second harmonic trace is obtained by measuring a second harmonic generation on a conventional CCD with a spatiotemporally distorted probe beam. The system shows a spectrometer resolution of 22 fs/pixel on the CCD and a true resolution on the order of the probe pulse duration. With considerable THz peak electric field strength, this formalism can open the door to single-shot THz detection without bandwidth limitations.

Details

Language :
English
ISSN :
1539-4794
Volume :
49
Issue :
2
Database :
MEDLINE
Journal :
Optics letters
Publication Type :
Academic Journal
Accession number :
38194534
Full Text :
https://doi.org/10.1364/OL.510070