Abstract
We report high-power, single-mode surface-emission from THz quantum cascade (QC) lasers with a type-II photonic heterostructure (PHS) resonator. Such resonator selectively excites the unusual radiative mode with significantly enhanced radiation efficiency. The PHS lasers (f ~ 3.4 THz) exhibit peak output powers of 103 mW at 20K, and the maximum operation temperature (Tmax) is 120K in pulsed mode. PHS lasers also show a directional single-lobed far-field pattern with a typical divergence angle of 20°×9°.
© 2012 Optical Society of America
PDF ArticleMore Like This
Gangyi Xu, Elodie Strupiechonski, Gregoire Sevin, Raffaele Colombelli, Ali Belarouci, Xavier Letartre, Suraj P. Khanna, Lianhe Li, Edmund H. Linfield, and A. Giles Davies
PDA_3 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2011
Gangyi Xu, Yacine Halioua, Raffaele Colombelli, Suraj P. Khanna, Lianhe Li, Edmund H. Linfield, A. Giles Davies, Harvey Beere, and David A. Ritchie
CBCC_1_1 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2013
Yuan Jin, Liang Gao, Ji Chen, Chongzhao Wu, John L. Reno, and Sushil Kumar
SF3G.6 CLEO: Science and Innovations (CLEO:S&I) 2018