A novel photonic crystal vertical cavity surface emitting laser based on coherent coupling
A novel photonic crystal vertical cavity surface emitting laser based on coherent coupling作者机构:Nano-Optoelectronics Laboratory Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China
出 版 物:《Chinese Science Bulletin》 (中国科学通报)
年 卷 期:2010年第55卷第2期
页 面:111-113页
核心收录:
学科分类:080901[工学-物理电子学] 0809[工学-电子科学与技术(可授工学、理学学位)] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 070201[理学-理论物理] 0803[工学-光学工程] 0702[理学-物理学]
基 金:supported by the Key Program of the National Natural Sci-ence Foundation of China (Grant No. 10634080) the National Natural Sci-ence Foundation of China (Grant No. 60677046) the National Basic Re-search Program of China (Grant No. 2006CB921700) the National High Technology Research and Development Program of China (Grant No.2006AA03Z403)
主 题:垂直腔表面发射激光器 相干耦合 光子晶体 VCSEL 个人电脑 GaAs 发散角 氧化物
摘 要:We demonstrate a novel oxide confined GaAs-based photonic crystal vertical cavity surface emitting laser (PC-VCSEL) operating at a wavelength of 850 nm based on coherent coupling. A ring-shaped light-emitting aperture is added to the conventional PC-VCSEL, and coherent coupling is achieved between the central defect aperture and the ring-shaped light-emitting aperture. Measurements show that under the continuous-wave (CW) injected current of 20 mA, a high power of 2 mW is obtained, and the side mode suppression ratio (SMSR) is larger than 20 dB. The average divergence angle is 4.2° at the current level of 20 mA. Compared with the results ever reported, the divergence angle is reduced.