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Isaenko L, Dong L, Melnikova SV, Molokeev MS, Korzhneva KE, Krinitsin PG, Kurus AF, Samoshkin DA, Belousov RA, Lin Z. Phase Transitions and Nonlinear Optical Property Modifications in BaGa 4Se 7. Inorg Chem 2024; 63:10042-10049. [PMID: 38747508 DOI: 10.1021/acs.inorgchem.4c01341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2024]
Abstract
Phase transitions can change the crystal structure and modify the physical properties of crystals. In this work, we investigate the phase transition behavior in BaGa4Se7, an important middle infrared (mid-IR) nonlinear optical (NLO) crystal, in the temperature range from room temperature to 1173 K. Interestingly, the BaGa4Se7 crystal undergoes a reversible ferroelastic phase transition at T = 528 K, resulting in the presence of a newly discovered phase (γ-phase) at the higher temperature. The experimental temperature dependence of optical birefringence, as well as the first-principles birefringence and NLO coefficients, reveals that the γ-phase exhibits larger birefringence and better NLO properties compared with those of the low-temperature phase (α-phase). This work demonstrates that phase-transition-induced structural modification can improve the mid-IR NLO properties, which would provide an effective avenue to obtain materials with good optoelectronic performance.
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Affiliation(s)
- Lyudmila Isaenko
- Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Linfeng Dong
- Functional Crystals Lab, Technical Institute of Physics and Chemistry, CAS, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Svetlana V Melnikova
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
| | - Maxim S Molokeev
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia
| | - Ksenia E Korzhneva
- Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia
| | - Pavel G Krinitsin
- Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Alexey F Kurus
- Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Dmitry A Samoshkin
- Kutateladze Institute of Thermophysics SB RAS, Novosibirsk 630090, Russia
| | - Roman A Belousov
- Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk 630090, Russia
| | - Zheshuai Lin
- Functional Crystals Lab, Technical Institute of Physics and Chemistry, CAS, University of Chinese Academy of Sciences, Beijing 100190, China
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A monoclinic semiorganic molecular crystal GUHP for terahertz photonics and optoelectronics. Sci Rep 2021; 11:23433. [PMID: 34873239 PMCID: PMC8648782 DOI: 10.1038/s41598-021-02862-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 11/24/2021] [Indexed: 11/15/2022] Open
Abstract
In this paper we describe the properties of the crystal of guanylurea hydrogen phosphite (NH\documentclass[12pt]{minimal}
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\begin{document}$$_3$$\end{document}3 (GUHP) and propose its application in terahertz photonics and optoelectronics. GUHP crystal has a wide window of transparency and a high optical threshold in the visible and NIR spectral regions and narrow absorption bands in the terahertz frequency range. The spectral characteristics of absorption and refraction in the THz range were found to be strongly dependent on crystal temperature and orientation. Computer simulations made it possible to link the nature of the resonant response of the medium at THz frequencies with the molecular structure of the crystal, in particular, with intermolecular hydrogen bonds and the layered structure of the lattice. The possibility of application of the crystal under study for the conversion of femtosecond laser radiation from visible an NIR to terahertz range was demonstrated. It was shown that dispersion properties of the crystal allow the generation of narrow band terahertz radiation, whose spectral properties are determined by conditions close to phase matching. The properties of the generated terahertz radiation under various temperatures suggest the possibility of phonon mechanism of enhancement for nonlinear susceptibility of the second order.
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Malik HK, Singh D, Kumar R. Strong Terahertz radiation generation via wakefield in collisional plasma. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2020. [DOI: 10.1080/16583655.2020.1816648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hitendra K. Malik
- PWAPA Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi, India
| | - Divya Singh
- Department of Physics & Electronics, Rajdhani College, University of Delhi, New Delhi, India
| | - Ravinder Kumar
- Department of Physics, Janta Vedic College Baraut, Baghpat, India
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Carnio BN, Zawilski KT, Schunemann PG, Elezzabi AY. Generation of narrowband terahertz radiation via phonon mode enhanced nonlinearities in a BaGa 4Se 7 crystal. OPTICS LETTERS 2020; 45:4722-4725. [PMID: 32870841 DOI: 10.1364/ol.399895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
We report on narrowband terahertz (THz) radiation generation via optical rectification from a BaGa4Se7 crystal. The dense phonon mode distribution of the BaGa4Se7 crystal causes narrow transmission bands in the THz frequency range with enhanced nonlinear susceptibility magnitudes, thus permitting strong narrowband THz radiation generation at the frequencies of 1.97 and 2.34 THz. In comparison to THz radiation generated from a ZnTe crystal, the narrowband THz radiation produced by the BaGa4Se7 crystal is 4.5 times higher at 1.97 THz and 63% higher at 2.34 THz, thus making BaGa4Se7 a viable crystal for use in such areas as security and medicine.
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