High-power 2.3-/spl mu/m GaSb-based linear laser array |
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| Authors: | L. Shterengas G.L. Belenky A. Gourevitch D. Donetsky J.G. Kim R.U. Martinelli D. Westerfeld |
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| Affiliation: | State Univ. of New York, Stony Brook, NY, USA; |
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| Abstract: | ![]()
High-power 2.3-/spl mu/m In(Al)GaAsSb-GaSb type-I double quantum-well diode laser arrays were fabricated and characterized. Linear laser arrays with 19 100-/spl mu/m-wide elements on a 1-cm-long bar generated 10 W in continuous-wave (CW) mode and 18.5 W in quasi-CW mode (30 /spl mu/s/300 Hz) at a heatsink temperature of 18/spl deg/C. Array power conversion efficiency peaked at 30 A and was about 9%. Device internal efficiency was about 50%. Individual laser differential gain with respect to current was about twice as high as in InP-based laser heterostructures, demonstrating the potential of GaSb-based material system for high-power CW room-temperature laser diode arrays. |
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