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内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
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.