We have studied the optical spectra of low-dimensional semiconductor systems by calculating all possible optical transitions between electronic states. Optical absorption and emission have been obtained under differen...We have studied the optical spectra of low-dimensional semiconductor systems by calculating all possible optical transitions between electronic states. Optical absorption and emission have been obtained under different carrier population conditions and in different photon wavelengths. The line-shapes of the peaks in the optical spectrum are determined by the density of electronic states of the system, and the symmetries and intensities of these peaks can be improved by reducing the dimensionality of the system. Optical gain requires in general a population inversion, whereas for a quantum-dot system, there exists a threshold value of the population inversion.展开更多
O471.1 2001010640质子注入和快速退火对GaAs/AlGaAs量子阱能级结构的调整=Modify of GaAs/AlGaAs quantum wellby proton implantation and rapid thermalannealing[刊,中]/李娜,李宁,陆卫,刘兴权,窦红飞,沈学础(中科院上海技术物理研...O471.1 2001010640质子注入和快速退火对GaAs/AlGaAs量子阱能级结构的调整=Modify of GaAs/AlGaAs quantum wellby proton implantation and rapid thermalannealing[刊,中]/李娜,李宁,陆卫,刘兴权,窦红飞,沈学础(中科院上海技术物理研究所,红外物理国家实验室.上海(200083)),Fu lan,Tan H H,Jagadish C(Department of Electronic Materials Engineering,TheResearch School of Physical Sciences and Engineering,The Australian National University.Canbera ACT0200.Australia),Johnston M B,Gal M(school展开更多
O433.54 95020789 玻璃碎屑同—性认定的激光喇曼光谱研究一Studyof the laser Raman spectra to determine theidentity of bits of broken glasse[刊,中]/郭萍,唐岳湘,熊平(衡阳医学院.湖南,衡阳(130021))
文摘We have studied the optical spectra of low-dimensional semiconductor systems by calculating all possible optical transitions between electronic states. Optical absorption and emission have been obtained under different carrier population conditions and in different photon wavelengths. The line-shapes of the peaks in the optical spectrum are determined by the density of electronic states of the system, and the symmetries and intensities of these peaks can be improved by reducing the dimensionality of the system. Optical gain requires in general a population inversion, whereas for a quantum-dot system, there exists a threshold value of the population inversion.
文摘O471.1 2001010640质子注入和快速退火对GaAs/AlGaAs量子阱能级结构的调整=Modify of GaAs/AlGaAs quantum wellby proton implantation and rapid thermalannealing[刊,中]/李娜,李宁,陆卫,刘兴权,窦红飞,沈学础(中科院上海技术物理研究所,红外物理国家实验室.上海(200083)),Fu lan,Tan H H,Jagadish C(Department of Electronic Materials Engineering,TheResearch School of Physical Sciences and Engineering,The Australian National University.Canbera ACT0200.Australia),Johnston M B,Gal M(school
文摘O433.54 95020789 玻璃碎屑同—性认定的激光喇曼光谱研究一Studyof the laser Raman spectra to determine theidentity of bits of broken glasse[刊,中]/郭萍,唐岳湘,熊平(衡阳医学院.湖南,衡阳(130021))
