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Semiconductor laser structure for improved stability of the threshold current with respect to changes in the ambient temperature
Semiconductor laser structure for improved stability of the threshold current with respect to changes in the ambient temperature
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机译:半导体激光器结构,用于提高阈值电流相对于环境温度变化的稳定性
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摘要
A Type II heterojunction formed of semiconductor material which normally forms a Type I heterojunction. The Type II heterojunction is created by using a carefully chosen stack of epitaxial semiconductor materials with modifications to the band structure through quantum mechanical confinement effects. This virtual type II heterojunction is incorporated adjacent to the active region in a single-quantum-well, ridge-waveguide laser structure. An anomalous "Negative-T.sub.o " region is observed in which threshold current decreases with increasing temperature. A reduction in the temperature sensitivity of the threshold current of the laser structure results.
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