Continuous wave GaSb-based interband cascade lasers with hybrid cladding layers operated at room temperature and above

被引：2

作者：

Shen, Yixuan ^{[1
]}

Yang, Rui Q. ^{[1
]}

Mishima, Tetsuya D. ^{[2
]}

Santos, Michael B. ^{[2
]}

Wang, Xiaojun ^{[3
]}

机构：

[1] Univ Oklahoma, Sch Elect & Comp Engn, Norman, OK 73019 USA

[2] Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA

[3] AdTech Photon Inc, 18007 Cortney Court, City Of Industry, CA 91748 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2024年 / 136卷 / 19期

关键词：

Threshold current density;

D O I：

10.1063/5.0221586

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the preliminary demonstration of continuous wave (cw) GaSb-based interband cascade lasers (ICLs) with hybrid cladding layers at high temperatures up to 80 degrees C near a wavelength of 3.72 mu m. These ICLs have narrow-ridge widths of 7-11 mu m with improved thermal dissipation compared to broad-area devices. They delivered a cw output power of more than 30 mW/facet at 20 degrees C and had a cw threshold current density of 270 A/cm(2) with a voltage efficiency of 78% at 300 K. The obtained voltage efficiency of 78% is the highest ever reported among cw GaSb-based ICLs at room temperature, indicating an advantage of efficient carrier transport in the ICL with the hybrid cladding layers. The dependence of device performance on the narrow-ridge width and cavity length was investigated. The results suggested ways to further improve future devices.

引用

页数：6