TQ171.734 2001042894Cr<sup>4+</sup>在MgCaBa-铝酸盐玻璃中的发射及光学增益=Luminescenceand optical gain of Cr<sup>4+</sup> In MgCaBa aluminateglass[刊,中]/鄂书林,黄世华（中科院长春光机所.吉林,长...TQ171.734 2001042894Cr<sup>4+</sup>在MgCaBa-铝酸盐玻璃中的发射及光学增益=Luminescenceand optical gain of Cr<sup>4+</sup> In MgCaBa aluminateglass[刊,中]/鄂书林,黄世华（中科院长春光机所.吉林,长春（130022））//第十届全国凝聚态光学性质学术会议.-内蒙古海拉尔,2001.08.-59测量了在半导体激光器978 nm激发下MgCaBa-铝酸盐玻璃中Cr<sup>4+</sup>的发射光谱,其发射光谱为既有1.2μm处的线谱又有1.1 μm-1.6μm范围内的带谱,并应用ASE（Amplified Spontaneous Emission）方法根据不同激发长度下的发射光谱测量了光学增益系数。展开更多
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
文摘TQ171.734 2001042894Cr<sup>4+</sup>在MgCaBa-铝酸盐玻璃中的发射及光学增益=Luminescenceand optical gain of Cr<sup>4+</sup> In MgCaBa aluminateglass[刊,中]/鄂书林,黄世华（中科院长春光机所.吉林,长春（130022））//第十届全国凝聚态光学性质学术会议.-内蒙古海拉尔,2001.08.-59测量了在半导体激光器978 nm激发下MgCaBa-铝酸盐玻璃中Cr<sup>4+</sup>的发射光谱,其发射光谱为既有1.2μm处的线谱又有1.1 μm-1.6μm范围内的带谱,并应用ASE（Amplified Spontaneous Emission）方法根据不同激发长度下的发射光谱测量了光学增益系数。
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.
