Room—Temperature A1GaAsSb/InGaAsSb Multi—Quantum—Well Lasers with High Chraracteristic Temperature |
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作者姓名: | 徐刚毅 齐鸣 张雄 李爱珍 郑燕兰 |
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作者单位: | StateKeyLaboratoryofFunctionalMaterialsforInformatics,ShanghaiInstituteofMicrosystemandInformationTechnology,ChineseAcademyofSciences,Shanghai200050 |
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摘 要: | Planar structure A1GaAsSb/InGaAsSb lasers operated at 2.01/zm with high characteristic temperature have been fabricated from a strained multiple quantum-well heterostructure. To decrease the free carrier induced absorption of optical mode in the mid-infrared, we design a broaden waveguide layer in the laser structures to decrease the optical mode distribution in the heavy doped cladding layer, therefore it can be absorbed easily. To enhance the characteristic temperature of laser diodes, A1 constituent up to 80% was applied to the A1GaAsSb cladding layer. The laser diodes with a threshold current density of 1.8 kA/cm2 can be pulsed operating up to 340 K. The characteristic temperature To is 125 K and 90 K in the operating temperature ranges 170-220 K and 230-340 K, resDectivelv. The emission spectrum shows a multiple longitudinal mode.
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关 键 词: | A1GaAsSb/InGaAsSb 室温 多相量子阱激光器 铝镓砷锑化合物 铟镓砷锑化合物 半导体 光电装置 |
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