AlGaInAs/InP coupled-circular microlasers  

作　　者：黄永箴 林建东 姚齐峰 吕晓萌 杨跃德 肖金龙 杜云 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2012年第9期49-51,共3页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant Nos. 60777028,60723002, 60838003, 61006042, and 61061160502

摘　　要：AlGalnAs/InP coupled-circular microlasers with radius of 10-and 2-μm width middle bus waveguide are fabricated by photolithography and inductively coupled plasma etching techniques. Room-temperature continuous-wave single-mode operation is realized with an output power of 0.17 mW and a side-mode suppression ratio of 23 dB at 45 mA. A longitudinal mode interval of 11 nm is obtained from the lasing spectra, and mode Q factor of 6.2×10^3 is estimated from 3-dB width of a minor peak near the threshold current. The mode characteristics are simulated by finite-difference time-domain technique for coupled- circular resonators. The results show that, in addition to the coupled modes, high-radial-order whispering gallery modes with travelling wave behaviors can also have high Q factors in the coupled-circular resonators with a middle bus waveguide.AlGalnAs/InP coupled-circular microlasers with radius of 10-and 2-μm width middle bus waveguide are fabricated by photolithography and inductively coupled plasma etching techniques. Room-temperature continuous-wave single-mode operation is realized with an output power of 0.17 mW and a side-mode suppression ratio of 23 dB at 45 mA. A longitudinal mode interval of 11 nm is obtained from the lasing spectra, and mode Q factor of 6.2×10^3 is estimated from 3-dB width of a minor peak near the threshold current. The mode characteristics are simulated by finite-difference time-domain technique for coupled- circular resonators. The results show that, in addition to the coupled modes, high-radial-order whispering gallery modes with travelling wave behaviors can also have high Q factors in the coupled-circular resonators with a middle bus waveguide.

关 键 词：INP BUS MODE AlGaInAs/InP coupled-circular microlasers 

分 类 号：TN248[电子电信—物理电子学]