27 February 2014 Integrated widely tunable quantum cascade lasers with super-structure gratings
Author Affiliations +
Abstract
An integrated widely wavelength tunable mid-IR source is demonstrated. This three-section quantum cascade laser consists of a Fabry-Perot section placed between two super-structure grating (SSG) sections. The emission wavelength of the SSG-DBR QCL can be well controlled by varying the injection currents to the two grating sections of the device. The wavelength can be tuned from 4.58 μm to 4.77 μm (90 cm-1) with a supermode spacing of 30 nm. The SSG-DBR QCL can be a compact replacement for the external cavity QCL. It has great potential to achieve much further tuning ranges for many mid-IR sensing applications.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dingkai Guo, Xing Chen, Jiun-Yun Li, Liwei Cheng, Terrance Worchesky, Fow-Sen Choa, "Integrated widely tunable quantum cascade lasers with super-structure gratings", Proc. SPIE 9002, Novel In-Plane Semiconductor Lasers XIII, 90021N (27 February 2014); doi: 10.1117/12.2040965; https://doi.org/10.1117/12.2040965
PROCEEDINGS
8 PAGES


SHARE
Back to Top