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Spontaneous emission and threshold characteristics of 1.3-μm InGaAs-GaAs quantum-dot GaAs-based lasers

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5 Author(s)
Deppe, D.G. ; Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX ; Huffaker, D.L. ; Zou, Z. ; Park, G.
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The spontaneous emission spectra and lasing characteristics of long-wavelength (1.3-μm) quantum-dot lasers are studied. It is found experimentally that nonradiative recombination can dominate the room-temperature efficiency and limit threshold, By describing the quantum-dot spectral emission as due to energy levels of a two-dimensional harmonic oscillator, rate equations are developed to account for the temperature-dependent spontaneous and lasing characteristics

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Quantum Electronics, IEEE Journal of  (Volume:35 ,  Issue: 8 )