Add to BibSonomy
Abstract
This study reports on a composite structure composing tilted taper, and tilted and curved waveguides with the aim of enhancing the spectral width and output power of mid-infrared quantum cascade superluminescent emitters (QC-SLEs). The computational results indicate that a tilt angle of 10° and a curved angle of 20° can avoid the selectivity of a certain wavelength due to interference effects at tilt angles of 6° and 8°, resulting in the minimum reflectivity of ${1.3} \times {{10}^{- 4}}$ and ${4.4} \times {{10}^{- 4}}$ for each wide and narrow cavity surface. Simultaneously, the modes propagating perpendicular to the cavity surface exist the least. The corresponding experimental results show a significant enhancement in the spectral width to ${168.5}\;{{\rm cm}^{- 1}}$ and a high power output of 5.1 mW for the device. This study presents what we believe to be a novel concept for the designing of superluminescent emitters with both a broadband and high power output.
© 2024 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Chuncai Hou, Jialin Sun, Jiqiang Ning, Jinchuan Zhang, Ning Zhuo, Hongmei Chen, Yuanqing Huang, Zhanguo Wang, Ziyang Zhang, and Fengqi Liu
Opt. Express 26(11) 13730-13739 (2018)
Mei C. Zheng, Nyan L. Aung, Abanti Basak, Peter Q. Liu, Xiaojun Wang, Jen-Yu Fan, Mariano Troccoli, and Claire F. Gmachl
Opt. Express 23(3) 2713-2719 (2015)
Jialin Sun, Chuncai Hou, Jinchuan Zhang, Ning Zhuo, Hongmei Chen, Jiqiang Ning, Zhanguo Wang, Fengqi Liu, and Ziyang Zhang
Opt. Lett. 43(20) 5150-5153 (2018)