70 MW-level picosecond mid-infrared radiation generation by difference frequency generation in AgGaS.sub.2./sub., BaGa.sub.4./sub.Se.sub.7./sub., LiGaSe.sub.2./sub., and LiGaS.sub.2./sub.

Jelínek, M.; Frank, M.; Kubeček, V.; Novák, Ondřej; Huynh, Jaroslav; Cimrman, Martin; Chyla, Michal; Smrž, Martin; Mocek, Tomáš

doi:https://dx.doi.org/10.1109/JPHOT.2025.3542540

Number of the records: 1

70 MW-level picosecond mid-infrared radiation generation by difference frequency generation in AgGaS.sub.2./sub., BaGa.sub.4./sub.Se.sub.7./sub., LiGaSe.sub.2./sub., and LiGaS.sub.2./sub.

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SYSNO ASEP	0618597
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	70 MW-level picosecond mid-infrared radiation generation by difference frequency generation in AgGaS₂, BaGa₄Se₇, LiGaSe₂, and LiGaS₂
Author(s)	Jelínek, M. (CZ) Frank, M. (CZ) Kubeček, V. (CZ) Novák, Ondřej (FZU-D)_{RID, ORCID} Huynh, Jaroslav (FZU-D)_{RID, ORCID} Cimrman, Martin (FZU-D)_ORCID Chyla, Michal (FZU-D)_{RID, ORCID} Smrž, Martin (FZU-D)_{RID, ORCID} Mocek, Tomáš (FZU-D)_{RID, ORCID, SAI}
Number of authors	9
Article number	3000107
Source Title	IEEE Photonics Journal. - : Institute of Electrical and Electronics Engineers - ISSN 1943-0655 Roč. 17, č. 2 (2025)
Number of pages	7 s.
Language	eng - English
Country	US - United States
Keywords	difference frequency generation ; mid-infrared radiation ; nonlinear optics ; picosecond lasers
Subject RIV	BH - Optics, Masers, Lasers
OECD category	Optics (including laser optics and quantum optics)
R&D Projects	EH22_008/0004573 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	001438154800002
EID SCOPUS	105001208169
DOI	https://doi.org/10.1109/JPHOT.2025.3542540
Annotation	Comparative study of nonlinear crystals for picosecond difference frequency generation in mid-IR is presented. Nonlinear crystals of AgGaS2 , BaGa4 Se7 , LiGaSe2 , and LiGaS2 were studied. In order to investigate the dependence of efﬁciency on the crystal length, three sets of crystals with lengths of 2, 4, or 8 mm were tested. The developed tunable DFG system was driven by the 1.03 µm, 1.8 ps, Yb:YAG thin-disk laser system operated at the repetition rate of 10 or 100 Hz. As the best result, picosecond mid-IR pulses at a wavelength of ∼7 µm with the energy up to 130 µJ corresponding to the peak power of ∼72 MW were generated using the 8 mm long LiGaS2 crystal. Using the BaGa4Se7 crystal, DFG tunability in the wavelength range from 6 up to 13 µm was achieved.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2026
Electronic address	https://hdl.handle.net/11104/0365796

Number of the records: 1