Sergey V. Alekseev, Valery F. Losev, Yakov V. Grudtsyn, Andrey V. Koribut, Vyacheslav A. Trofimov, “Simulation of broadening the second harmonic spectrum in KDP by chirp pulse pumping”, J. Sib. Fed. Univ. Math. Phys., 2021, Volume 14, Issue 2,Pages <nobr>144

Simulation of broadening the second harmonic spectrum in KDP by chirp pulse pumping

Sergey V. Alekseev^a, Valery F. Losev^a, Yakov V. Grudtsyn^b, Andrey V. Koribut^b, Vyacheslav A. Trofimov^c

^a Institute of High Current Electronics SB RAS, Tomsk, Russian Federation
^b P. N. Lebedev Physical Institute of RAS, Moscow, Russian Federation
^c South China University of Technology, Guangzhou, China

Abstract: The conditions of broadening the second harmonic spectrum in KDP upon pumping by a negatively chirped pulse of fundamental frequency with central wavelength of 950 nm are analyzed numerically. It is shown that broadening of the spectrum (K = 1.4) is mainly limited by difference in group velocities of radiation pulse between first and second harmonics. The article is based on materials of the report at the first All-Russian scientific conference with international participation "YENISEI PHOTONICS – 2020".

Keywords: femtosecond laser pulse, second harmonic, spectrum, efficiency, pulse duration.

UDC: 621.373.826

Received: 10.08.2020
Received in revised form: 10.09.2020
Accepted: 20.11.2020

Language: English

DOI: 10.17516/1997-1397-2021-14-2-144-149