Broadband Optical Constants and Nonlinear Properties of SnS2 and SnSe2

Nanomaterials

卷:12

Aleksandr S. Slavich¹  Aleksey V. Arsenin¹  Dmitry I. Yakubovsky¹  Marwa A. El-Sayed¹  Gleb I. Tselikov¹  Valentyn S. Volkov¹  Andrey A. Vyshnevyy¹  Arslan B. Mazitov¹  Mikhail K. Tatmyshevskiy¹  Sergey M. Novikov¹  Ivan A. Kruglov¹  Georgy A. Ermolaev¹  Andrey A. Fedyanin²  Anna A. Popkova²  Vladimir O. Bessonov²  Ilya M. Antropov² 

[1] Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 9 Institutsky Lane, 141700 Dolgoprudny, Russia;

[2] Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;

关键词: two-dimensional materials;    optical constants;    dielectric properties;    refractive index;    nanophotonics;    spectroscopic ellipsometry;   

DOI  :  10.3390/nano12010141

来源: DOAJ

【 摘 要 】

SnS₂ and SnSe₂ have recently been shown to have a wide range of applications in photonic and optoelectronic devices. However, because of incomplete knowledge about their optical characteristics, the use of SnS₂ and SnSe₂ in optical engineering remains challenging. Here, we addressed this problem by establishing SnS₂ and SnSe₂ linear and nonlinear optical properties in the broad (300–3300 nm) spectral range. Coupled with the first-principle calculations, our experimental study unveiled the full dielectric tensor of SnS₂ and SnSe₂. Furthermore, we established that SnS₂ is a promising material for visible high refractive index nanophotonics. Meanwhile, SnSe₂ demonstrates a stronger nonlinear response compared with SnS₂. Our results create a solid ground for current and next-generation SnS₂- and SnSe₂-based devices.

【 授权许可】

Unknown