Optical properties of LiInSe_2 in the THz frequency regime | Zendy

Qijun Liang | Zendy; Shanpeng Wang | Zendy; Xutang Tao | Zendy; T. Dekorsy | Zendy

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Optical properties of LiInSe_2 in the THz frequency regime

Author(s) -

Qijun Liang,

Shanpeng Wang,

Xutang Tao,

T. Dekorsy

Publication year - 2014

Publication title -

optical materials express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.925

H-Index - 66

ISSN - 2159-3930

DOI - 10.1364/ome.4.001336

Subject(s) - terahertz radiation , materials science , refractive index , birefringence , raman spectroscopy , attenuation coefficient , dielectric , optics , terahertz spectroscopy and technology , spectroscopy , molecular vibration , optoelectronics , physics , quantum mechanics

We investigate the optical properties of LiInSe2 (LISe) by THz time-domain spectroscopy (THz-TDS). The experimental results indicate that LISe has excellent transparency in the THz frequency region. We determine quantitatively the birefringence of LISe. The refractive index and absorption coefficient along the three dielectric axes of LISe are reported in the THz frequency region. The lattice vibrations of LISe are analyzed on the basis of the THz-TDS measurement in combination with infrared and Raman spectra. The origin of the low-frequency vibrational modes below 3 THz as interatomic bond-bending modes is revealed.

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