The temperature dependence of damping in quantum-well lasers has been investigated. The lasers with large K factors at room temperature show a rapid increase of the K factor with temperature. The temperature dependence of the K factor is larger for lasers with wider separate confinement heterostructure region, fewer wells, and narrower quantum-well width. The carrier transport in quantum-well structures is responsible for the excess increase of the K factor at high temperatures.
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Ishikawa et al. (1992) studied this question.
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