共查询到18条相似文献,搜索用时 62 毫秒
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GaInNAs/GaAs量子阱激光器的发展与未来 总被引:1,自引:0,他引:1
GsInNAs是一种直接带隙半导体材料,在长波长(1.30和1.55μm)光通信系统中具有广阔的应用前景。通过调节In和N的组分,既可获得应变GaInNAs外延材料,也可制备GaInNAs与GaAs匹配的异质结构,其波长覆盖范围为0.9 ̄2.0μm.GaInNAs/GaAs量子阱激光器的特征温度为200K,远大于现行GaInNAsP/InP激光器的特征温度(T0=50K)。GaInNAs光电子器件 相似文献
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报道了一种具有高速响应特性的GaAs基长波长谐振强增强型(RCE)光探测器,它采用分子束外延技术(MBE)在GaAs衬底上直接生长GaAs/AlAs布拉格反射镜(DBR)和GaInNAs/GaAs多量子阱吸收层而形成,解决了GaAs系材料只能对短波长光响应的问题,实现了GaAs基探测器对长波长光的响应。该器件在峰值响应波长1296.5nm处获得了17.4%的量子效率,响应谱线半宽为11nm,零偏置时的暗电流密度8.74×10-15A/μm2,具有良好的暗电流特性。通过RC常数测量计算得到器件的3dB带宽为4.82GHz。 相似文献
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Niu Zhichuan Han Qin Ni Haiqiao Yang Xiaohong Xu Yingqiang Du Yun Zhang Shiyong Peng Hongling Zhao Huan Wu Donghai Li Sh 《半导体学报》2005,26(9):1860-1864
Material growth and device fabrication of the first 1.3μm quantum well (QW) edge emitting laser diodes in China are reported.Through the optimization of the molecular beam epitaxy (MBE) growth conditions and the tuning of the indium and nitrogen composition of the GaInNAs QWs,the emission wavelengths of the QWs can be tuned to 1.3μm.Ridge geometry waveguide laser diodes are fabricated.The lasing wavelength is 1.3μm under continuous current injection at room temperature with threshold current of 1kA/cm2 for the laser diode structures with the cleaved facet mirrors.The output light power over 30mW is obtained. 相似文献
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AlGaAs/GaAs量子阱探测器的吸收光谱研究 总被引:1,自引:0,他引:1
从定态Schrodinger方程出发,研究了不同Al组分和不同温度对宽量子阱红外探测器吸收光谱的影响。当体系的费米能级固定后,发现量子阱基态束缚能随着A1组分增长而变大,且相应的吸收光谱峰值趋于短波。环境温度对A1GaAs/GaAs量子阱红外探测器的响应光谱影响不大。通过理论计算定量给出了A1GaAs/GaAs量子阱红外探测器吸收光谱随量子阱阱宽、Al组分和温度变化的规律。 相似文献
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M. Y?lmaz N. Balkan B. Ulug M. Sopanen M. Mattila A. Arnoult 《Microelectronics Journal》2009,40(3):406-409
Experimental results concerning the steady-state photoluminescence (PL) studies in n and p modulation doped and undoped GaInNAs/GaAs quantum wells are presented. The effects of modulation, type of doping and nitrogen concentration on the PL and the temperature dependence of the band gap, carrier localization and non-radiative recombination are investigated. Increasing the nitrogen composition decreases energy band gap as expected. The n-type modulation doping eliminates most of the defect-related effects and blue shifts the energy band gap. However, the p-type doping gives rise to additional features in the PL spectra and red shifts energy band gap further compared to the n-type-doped material. 相似文献