Abstract

We fabricated QD liquid-core optical fibers by doping ${{\rm CuInS}_2}/{\rm ZnS}$ (CIS/ZnS) core/shell QDs with cladding times of 90 and 60 min, respectively, and compared and analyzed their emission properties with those of bare core ${{\rm CuInS}_2}$ QDs. For CIS/ZnS core/shell QDs (with cladding time of 90 min) doped fibers, their emission transmits the longest distance in the fiber, and the emission intensity is approximately 4.73 times that of bare-core QD-doped fibers. Additionally, the fact that the full-width at half-maximum is narrowing and the spectral intensity is rapidly increasing superlinearly with excitation power indicates that stimulated emission happens in the fiber. The optical performance was compared and showed good agreement with a theoretical two-level system model for the QDs confined in an optical waveguide.

© 2023 Optica Publishing Group

Enhanced emission from a PbSe/CdSe core/shell quantum dot-doped optical fiber

Lei Zhang, Liping Zhao, and Youjin Zheng
Opt. Mater. Express 8(11) 3551-3560 (2018)

Integration of green CuInS₂/ZnS quantum dots for high-efficiency light-emitting diodes and high-responsivity photodetectors

Feng Li, Chenyang Guo, Rui Pan, Yaoyao Zhu, Lai You, Jun Wang, Xiao Jin, Qin Zhang, Yinglin Song, Zhongping Chen, and Qinghua Li
Opt. Mater. Express 8(2) 314-323 (2018)

Optical fiber carbon dioxide sensor based on colorimetric change of α-naphtholphthalein and CIS/ZnS quantum dots incorporated with a polymer matrix

Cheng-Shane Chu and Meng-Wei Hsieh
Opt. Mater. Express 9(7) 2937-2945 (2019)

Highly efficient near-infrared light-emitting diodes based on Zn:CuInSe₂/ZnS//ZnS quantum dots with double shell engineering

Xuhui Zhang, Tianyue Wang, Qingli Lin, Fei Chen, Lei Wang, and Zuliang Du
Opt. Express 30(16) 29449-29460 (2022)

Microstructural and optical properties of CdSe/CdS/ZnS core-shell-shell quantum dots

Dea Uk Lee, Dae Hun Kim, Dong Hyuk Choi, Sang Wook Kim, Hong Seok Lee, Keon-Ho Yoo, and Tae Whan Kim
Opt. Express 24(2) A350-A357 (2016)