Title :
High-Power Surface-Emitting Surface-Plasmon-Enhanced Distributed Feedback Quantum Cascade Lasers
Author :
Chen, Jianyan ; Liu, Junqi ; Guo, Wanhong ; Wang, Tao ; Zhang, Jinchuan ; Li, Lu ; Wang, Lijun ; Liu, Fengqi ; Wang, Zhanguo
Author_Institution :
Key Lab. of Semicond. Mater. Sci., Inst. of Semicond., Beijing, China
fDate :
6/1/2012 12:00:00 AM
Abstract :
Room temperature operation of surface-emitting single-mode distributed feedback quantum cascade lasers (QCLs) operating at a wavelength around 8.5 μm is presented. The record output peak powers of 3.85 W at 160 K and 1.06 W at 300 K were obtained by an optimum grating design. A two-lobed far-field pattern with a separation of 0.35° along the waveguide was observed. It is an important step to realize the practical application of surface-emitting QCLs in mid-infrared spectral range for high power in optical circuit integration.
Keywords :
distributed feedback lasers; infrared spectra; quantum cascade lasers; surface emitting lasers; surface plasmons; high power surface emitting lasers; mid-infrared spectral range; optical circuit integration; optimum grating design; power 1.06 W; power 3.85 W; quantum cascade lasers; surface plasmon enhanced distributed feedback lasers; temperature 293 K to 298 K; two-lobed far-field pattern; wavelength 8.5 mum; Distributed feedback devices; Gratings; Optical surface waves; Quantum cascade lasers; Surface emitting lasers; Surface treatment; Surface waves; Distributed feedback devices; quantum cascade lasers (QCLs); semiconductor lasers; surface-emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2192724
