Single-shot local measurement of terahertz correlated second harmonic generation in laser air plasma filaments.
Opt Lett
; 49(2): 226-229, 2024 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-38194534
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 22â
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.
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MEDLINE
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En
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2024
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Article