By Liu Y.M.

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R. Paiella, G. Hunziker, U. Koren, and K. J. Vahala: IEEE J. Sel. Topics Quantum Electron. 3, 529 (1997) 21. J. Hader, J. V. Moloney, and S. W. Koch: IEEE J. Quantum Electron. 40, 330 (2004) 22. com) 23. com) 2 Fabry–Perot Lasers: Temperature and Many-Body Effects B. Grote1 , E. K. Heller1 , R. Scarmozzino1 , J. Hader2 , J. V. Moloney2 , and S. W. 1 Introduction In this chapter, we demonstrate the integration of microscopic gain modeling into the laser design tool LaserMOD, which is derived from the Minilase II simulator developed at the University of Illinois [1].

Usually, barrier and other layer materials in semiconductor quantum well lasers are designed to be transparent at the laser wavelength given by the effective quantum well band gap. However, although band-to-band absorption may vanish, absorption spectra usually exhibit an Urbach tail due to phonon-assisted absorption and disorder-induced localized states below the band gap, contributing to background losses. 3 Gain By coupling the electronic and optical subsystems, the spontaneous and, especially, the stimulated emission play a crucial role in the laser simulation.

Hader, A. Thr¨ anhardt, and J. V. Moloney fractive index is influenced by contributions from a wider energy range than the absorption/gain. Therefore, it is not very sensitive to the details of the excitonic interaction in a specific energetic region. As can be seen from Figs. 6(c) and (d), the refractive index spectra, with or without the Coulomb-induced subband coupling, are far more similar than the corresponding gain spectra. This is true particularly in the high-density (gain-) regime in which the Coulomb interaction is strongly screened.

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A Characterization for Windowed Fourier Orthonormal Basis with Compact Support by Liu Y.M.


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