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Kvantovaya Elektronika, 2024, Volume 54, Number 3, Pages 133–136 (Mi qe18405)  

Nonlinear optical phenomena

Method of spatial alignment of focal planes and sample positioning in the pump–probe scheme

A. V. Ovchinnikov, I. V. Il'ina, M. A. Ovchinnikova, O. V. Chefonov

Joint Institute for High Temperatures, Russian Academy of Sciences, 125412, Moscow, Russia
References:
Abstract: A new method is proposed for determining the mutual position of the focal planes of focusing elements and their spatial alignment along the laser beam propagation axis in the optical pump–probe scheme. The method is based on the effect of nonlinear absorption arising from the interaction of femtosecond laser pulses with matter. The practical application of this method is demonstrated using the example of setting up an optical scheme for measuring the temporal shape of a terahertz pulse with the electro-optical gating method.
Keywords: femtosecond laser pulse, optical rectification, terahertz radiation, nonlinear absorption.
Funding agency Grant number
Russian Science Foundation 24-19-00311
Experiments were performed on a unique terawatt Cr:forsterite laser system (UNU “LTFK”) at a Laser femtosecond complex shared facilities centre of the Joint Institute for High Temperatures, Russian Academy of Sciences. The study was supported by the Russian Science Foundation (grant no. 24-19-00311, https://rscf.ru/en/project/24-19-00311/).
Received: 11.06.2024
English version:
Bull. Lebedev Physics Institute, 2024, Volume 51, Issue suppl. 6, Pages S435–S440
DOI: https://doi.org/10.3103/S1068335624601584
Document Type: Article
Language: Russian


Citation: A. V. Ovchinnikov, I. V. Il'ina, M. A. Ovchinnikova, O. V. Chefonov, “Method of spatial alignment of focal planes and sample positioning in the pump–probe scheme”, Kvantovaya Elektronika, 54:3 (2024), 133–136 [Bull. Lebedev Physics Institute, 51:suppl. 6 (2024), S435–S440]
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