Structure and Optical Properties of the Li(2)In(2)GeSe(6 )Crystal : научное издание | Научно-инновационный портал СФУ

Structure and Optical Properties of the Li(2)In(2)GeSe(6 )Crystal : научное издание

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1021/acs.jpcc.8b02799

Аннотация: Intense search for new nonlinear optical crystals for the mid-infrared region is in progress, and Li-containing quaternary chalcogenides are expected to improve transparency range, stability, phase-matching conditions, and other parameters in comparison with commercially available AgGaS2, AgGaSe2, and ZnGeP2. Single crystals of Li2In2GeSe6 up to 8 mm in size were obtained by the Bridgman- Stockbarger growth technique, and their high quality was confirmed by exciton luminescence. A monoclinic structure and direct band-to-band electronic transitions were established, and the thermal expansion was shown to be virtually isotropic. Defect-related absorption and luminescence were revealed, and the way to lower them was suggested. The electronic structure, density of states, and some optical properties were calculated from the first principles for Li2In2GeSe6. The calculated nonlinear coefficients and rather large birefringence indicate a strong phase-matching ability. These investigations demonstrate that Li2In2GeSe6 is a promising mid-infrared nonlinear optical crystal.

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Издание

Журнал: JOURNAL OF PHYSICAL CHEMISTRY C

Выпуск журнала: Vol. 122, Is. 30

Номера страниц: 17413-17422

ISSN журнала: 19327447

Место издания: WASHINGTON

Издатель: AMER CHEMICAL SOC

Авторы

  • Yelisseyev A.P. (RAS, Sobolev Inst Geol & Mineral, 3 Ac Koptyug Ave, Novosibirsk 630090, Russia; Novosibirsk State Univ, 2 Pyrogova St, Novosibirsk 630090, Russia)
  • Molokeev M.S. (RAS, SB, KSC, Lab Crystal Phys,Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia; Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Jiang Xingxing (Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China)
  • Krinitsin P.G. (RAS, Sobolev Inst Geol & Mineral, 3 Ac Koptyug Ave, Novosibirsk 630090, Russia)
  • Isaenko L.I. (RAS, Sobolev Inst Geol & Mineral, 3 Ac Koptyug Ave, Novosibirsk 630090, Russia; Novosibirsk State Univ, 2 Pyrogova St, Novosibirsk 630090, Russia)
  • Lin Zheshuai (Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China; Univ Chinese Acad Sci, Beijing 100190, Peoples R China)

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