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Ridge-waveguide lasers emitting at /spl sim/1.9 μm have been fabricated from a multiple-quantum-well heterostructure with an active region consisting of five GaInAsSb wells and six AlGaAsSb barriers. At room temperature, single-ended cw output power as high as 100 mW has been obtained. The maximum cw operating temperature is 130/spl deg/C, with a characteristic temperature of 85 K between 20 and 80/spl deg/C.
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Choi et al. (1995) studied this question.
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