| 电场对量子肼中自由载流子光辐射线宽的影响 |
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| 引用本文： | 付方正.电场对量子肼中自由载流子光辐射线宽的影响[J].光谱学与光谱分析,1999,19(6):785-787. |
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| 作者姓名： | 付方正 |
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| 作者单位： | 南昌大学物理系 |
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| 摘 要： | 本文对固体中在较大空间范围运动的粒子采用轨道、动量及波包来描述。根据量子力学测不准关系，粒子的能量测不准公式被导出。公式表明，电场强烈地散射载流子，使载流子所处能级大为展宽。应用该公式到Ｐ－Ｉ－Ｎ结构的ＧａＡｓ／ＧａＡｌＡｓ多量子阱中，理论计算的光辐射线宽与光致荧光实验测得的线宽吻合。
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| 关 键 词： | 量子阱 电场 光辐射 线宽 自由载流子 光学器件 |
Effect of electric field on optical radiation linewidth of free-carriers in quantum wells] |
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| F Fu.Effect of electric field on optical radiation linewidth of free-carriers in quantum wells][J].Spectroscopy and Spectral Analysis,1999,19(6):785-787. |
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| Authors: | F Fu |
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| Institution: | Physics Department, Nanchang University, 330047 Nanchang. |
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| Abstract: | By using concepts as orbit, momentum and wave packet, the particles which move in a large range of space in solid state are described. According to the uncertainty relations in quantum mechanics, a formula of energy uncertainty of particles is derived. The formula indicates that electric field scatters carriers strongly and makes energy levels broaden largely. Applying the formula to GaAs/GaAlAs quantum wells with P-I-N structure, the calculated optical radiation linewidths are in agreement with measured photoluminescence linewidths. |
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