Focal Spot Imaging of Terahertz Subpicosecond Pulse by THz-Field-Induced Optical Second Harmonic Generation

O. V. Chefonov; A. V. Ovchinnikov; D. S. Sitnikov; M. B. Agranat

doi:10.1134/S0018151X19010036

Focal Spot Imaging of Terahertz Subpicosecond Pulse by THz-Field-Induced Optical Second Harmonic Generation

Authors: Chefonov O.V.¹, Ovchinnikov A.V.¹, Sitnikov D.S.¹, Agranat M.B.¹
Affiliations:
1. Joint Institute for High Temperatures
Issue: Vol 57, No 1 (2019)
Pages: 137-139
Section: Short Communications
URL: https://journals.rcsi.science/0018-151X/article/view/157913
DOI: https://doi.org/10.1134/S0018151X19010036
ID: 157913

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract
About the authors
References
Supplementary files
Statistics

Abstract

Optical imaging of spatial distribution of intensity in the focal spot of the terahertz pulse was developed. The technique is based on the THz electric field-induced second harmonic generation in the nonlinear centrosymmetric crystal (SrTiO₃). The measurements of the spatial distribution of focal spot of terahertz radiation with the electric field strength over 1 MV/cm were conducted.