Influence of free carrier plasma effect on carrier-inducedrefractive index change for quantum-well lasers |
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Authors: | Murata S. Tomita A. Suzuki A. |
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Affiliation: | NEC Corp., Tsukuba; |
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Abstract: | The influence of the free carrier component due to the plasma effect on carrier-induced refractive index change and its dependency on polarization for multiple-quantum-well (MQW) and bulk lasers are experimentally studied. The ratios of the component to the total index change, Rfc, are 0.6, 0.4, and 0.1 for 1.3-μm MQW, 1.3-μm bulk, and 0.8-μm MQW lasers, respectively. The TM/TE polarization ratios of the component, RTMTE/, are 0.8 and 0.3 for 1.3-μm MQW and 0.8-μm MQW lasers. The relationship between the index change and the carrier overflow (to barrier and separate confinement heterostructure layers) for MQW lasers is also discussed. Large Rfc and RTMTE/ for the 1.3-μm MQW laser result from the carrier overflow |
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