Title :
Distributed feedback terahertz quantum cascade lasers with complex-coupled metallic gratings
Author :
Chen, J.Y. ; Liu, J.Q. ; Liu, F.Q. ; Li, Luoqing ; Wang, L. ; Wang, Z.G.
Author_Institution :
Key Lab. of Semicond. Mater. Sci., Chinese Acad. of Sci., Beijing, China
Abstract :
The singlemode operation of a distributed feedback terahertz quantum cascade laser with complex-coupled metallic relief gratings emitting at 3.09 THz ( 97.07 m) is reported. The side-mode suppression ratio is about 20 dB at all operating temperatures. The highest working temperature of up to 88 K is obtained, with the optical power of 10 mW at 10 K and 1 mW at 88 K.
Keywords :
diffraction gratings; distributed feedback lasers; quantum cascade lasers; submillimetre wave lasers; complex-coupled metallic gratings; distributed feedback terahertz quantum cascade lasers; frequency 3.09 THz; power 1 mW; power 10 mW; side-mode suppression ratio; temperature 10 K; temperature 88 K;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.2223
