Third-order photonic-crystal distributed-feedback quantum cascade lasers

作     者：Zhang, J. C. Liu, F. Q. Wang, L. J. Zhao, L. H. Liu, W. F. Liu, J. Q. Li, L. Wang, Z. G. 

作者机构：Chinese Acad Sci Inst Semicond Key Lab Semicond Mat Sci Beijing 100083 Peoples R China Tsinghua Univ Dept Elect Engn Beijing 100084 Peoples R China 

出 版 物：《PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS》 (光子学和毫微结构-基本原理和应用)

年 卷 期：2012年第10卷第4期

页      面：435-439页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Science Fund for Distinguished Young Scholars of China National Natural Science Foundation of China [60736031, 60806018, 60906026] National High Technology Research and Development Program of China [2007AA03Z446, 2009AA03Z403] 

主　　题：Quantum cascade lasers Distributed-feedback Photonic-crystal Holographic lithography 

摘      要：We demonstrate room-temperature operation of broad-area edge-emitting photonic-crystal distributed-feedback quantum cascade lasers at lambda similar to 4.6 mu m. The lasers use a weak-index perturbed third-order photonic-crystal lattice to control the optical mode in the wafer plane. Utilizing this coupling mechanism, the near-diffraction-limited beam quality with a far-field profile normal to the facet can be obtained. Single-mode operation with a signal-to-noise ratio of about 20 dB is achieved in the temperature range of 85-290 K. The single-facet output power is above 1 W for a 55 mu m x 2.5 mm laser bar at 85 K in pulsed mode. (C) 2011 Elsevier B.V. All rights reserved.