DataVXAdvanced Optical MaterialsPaper
journal article·2021-03

A New Nonlinear Optical Selenide Crystal AgLiGa2Se4 with Good Comprehensive Performance in Mid‐Infrared Region

Alexander Yelisseyev, Sergei Lobanov, Maxim Molokeev, Shengzi Zhang, Alexei Pugachev, Zheshuai Lin, Vitaly Vedenyapin, Alexei Kurus, Avag Khamoyam, Ludmila Isaenko

Advanced Optical Materials· Volume 9· Issue 5
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Source abstract

Abstract

Abstract Mid‐infrared (mid‐IR) nonlinear optical (NLO) crystals are indispensable for the mid‐IR lasers generation with tunable wavelengths from 3 to 20 µm. AgGaSe2 is a commercial mid‐IR NLO crystal with the highest figures of merit, but suffers low laser damage threshold (LDT). To achieve the balance of optical transmission, NLO effect, and LDT, it is proposed to molecularly modify the AgGaSe2 structure by introducing the [LiSe4] tetrahedra, and successfully grow large crystals of a new selenide AgLiGa2Se4. The replacement of half of the heavy Ag+ cations with light Li+ increases the band gap to 2.2 eV (vs. 1.7 eV in AgGaSe2). The LDT value in AgLiGa2Se4 increases five times compared to that in AgGaSe2, while keeping a relatively large NLO susceptibility of 26 pm V−1. Moreover, the thermal expansion coefficients in AgLiGa2Se4 are approximately two times lower in absolute value compared with AgGaSe2, which is beneficial to the large crystal growth. All these advantages would make AgLiGa2Se4 a new promising NLO crystal for mid‐IR laser applications.
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Research context

OpenAlex topics: Crystal Structures and Properties · Nonlinear Optical Materials Research · Solid State Laser Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Lithospheric Mantle and Diamond Deposits Laboratory of Crystal Growth Sobolev Institute of Geology and Mineralogy SB RAS Novosibirsk 630090 Russia

Department of Physics Laboratory of Functional materials Novosibirsk State University Novosibirsk 630090 Russia

Laboratory of Crystal Physics Kirensky Institute of Physics SB RAS Krasnoyarsk 660036 Russia

Department of Physics Far Eastern State Transport University Khabarovsk 680021 Russia

Department of Engineering Physics and Radioelectronic Siberian Federal University Krasnoyarsk 660041 Russia

Technical Institute of Physics and Chemistry CAS Beijing 100190 P. R. China

University of Chinese Academy of Sciences Beijing 100190 P. R. China

Laboratory of Condensed Matter Spectroscopy Institute of Automation and Electrometry SB RAS Novosibirsk 630090 Russia

Funding

Russian Science Foundation · Ministerstwo Nauki i Szkolnictwa Wyższego · Chinese Academy of Sciences

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