Abstract
The ultra-wideband supercontinuum generation (SCG) in a Te-based chalcogenide (ChG) photonic crystal fiber (PCF) is simulated in the mid-infrared (MIR) waveband. The PCF core and cladding materials are ${{\rm Ge}_{20}}{{\rm As}_{20}}{{\rm Se}_{15}}{{\rm Te}_{45}}$ and ${{\rm Ge}_{20}}{{\rm As}_{20}}{{\rm Se}_{17}}{{\rm Te}_{43}}$, respectively. The supercontinuum (SC) broadening affected by the core diameter and fiber absorption is considered. The selected PCFs at different pumping wavelengths can demonstrate the generation of ultra-wideband MIR supercontinuum according to the simulated results. We consider SC broadening with and without fiber absorption. A SC range from 3 to 25 µm is demonstrated by simulation in a PCF with a core diameter of 8 µm and a pump wavelength of 6 µm considering the fiber absorption. With the increase of the peak power and the pulse width and the decrease of the core diameter, the degree of coherence gradually degraded. To the best of our knowledge, this is the first demonstration of the possibility of SCG up to the waveband of 25 µm in fiber. Our results highlight the potential of a novel Te-based chalcogenide multi-material PCF for SCG. We also provide a way to generate the SCs to longer wavebands than 20 µm in fiber, especially up to the far-infrared waveband.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Yiqi Chu, Zhiyu Xu, Chuchen Li, Chenyun Jiang, Tianhao Hu, Zhongbin Zhao, Yong Zhou, Xiaohui Ma, Wentan Fang, Wei Zhang, Xiaolin Chen, Song Huang, Ronghua Yu, Meisong Liao, and Weiqing Gao
Appl. Opt. 63(9) 2187-2194 (2024)
Yuan Yuan, Peilong Yang, Xuefeng Peng, Zhenfei Cao, Shengjie Ding, Nan Zhang, Zijun Liu, Peiqing Zhang, Xunsi Wang, and Shixun Dai
J. Opt. Soc. Am. B 37(2) 227-232 (2020)
D. Jayasuriya, C. R. Petersen, D. Furniss, C. Markos, Z. Tang, MD. S. Habib, O. Bang, T. M Benson, and A. B Seddon
Opt. Mater. Express 9(6) 2617-2629 (2019)