Open AccessCdTe microwires as mid-infrared optical waveguides
Author(s) -
Chenguang Xin,
Hao Wu,
Yu Xie,
Shaoliang Yu,
Ning Zhou,
Zhangxing Shi,
Xin Guo,
Limin Tong
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.010944
Subject(s) - materials science , cadmium telluride photovoltaics , optics , optoelectronics , infrared , refractive index , wavelength , broadband , evaporation , physics , thermodynamics
Cadmium telluride (CdTe) has been proven to be an attractive mid-infrared (MIR) material with a large refractive index (~2.68 at 4.5 μm) and broadband transparency (~1 to 25 μm). CdTe microwires (MWs) with diameters from a few to about ten micrometers were fabricated by a thermal evaporation process. MIR light was coupled into and guided through individual MWs. Excellent optical waveguiding properties of these MWs are experimentally obtained within MIR spectral range (up to 8.6 μm), with waveguiding losses from 1.3 to 13 dB/cm. Our results show that CdTe MWs can be used as wavelength or subwavelength-width waveguides for MIR microphotonics or circuits.