Dominant role of many-body effects on the carrier distribution function of quantum dot lasers

The effects of free-carrier-induced shift and broadening on the carrier distribution function are studied considering different extreme cases for carrier statistics (Fermi–Dirac and random carrier distributions) as well as quantum dot (QD) ensemble inhomogeneity and state separation using a Monte Carlo model. Using this model, we show that the dominant factor determining the carrier distribution function is the free carrier effects and not the choice of carrier statistics. By using empirical values of the free-carrier-induced shift and broadening, good agreement is obtained with experimental data of QD materials obtained under electrical injection for both extreme cases of carrier statistics.

[1]  R. Sarpong,et al.  Bio-inspired synthesis of xishacorenes A, B, and C, and a new congener from fuscol† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c9sc02572c , 2019, Chemical science.

[2]  P. Smowton,et al.  Fermi-dirac and random carrier distributions in quantum dot lasers , 2014 .

[3]  Caroline A. Ross,et al.  Structural and magnetic characterization of the intermartensitic phase transition in NiMnSn Heusler alloy ribbons , 2013 .

[4]  B. Stevens,et al.  Negative differential gain due to many body effects in self-assembled quantum dot lasers , 2011 .

[5]  K. Kennedy,et al.  O-band excited state quantum dot bilayer lasers , 2011 .

[6]  M. Lorke,et al.  Anomaly in the excitation dependence of the optical gain of semiconductor quantum dots , 2006 .

[7]  M. Lorke,et al.  Influence of carrier-carrier and carrier-phonon correlations on optical absorption and gain in quantum-dot systems , 2005, cond-mat/0509543.

[8]  Andrea Fiore,et al.  Role of thermal hopping and homogeneous broadening on the spectral characteristics of quantum dot lasers , 2005 .

[9]  G. Burr,et al.  Journal of Applied Physics , 2004 .

[10]  Peter Blood,et al.  Thermodynamic balance in quantum dot lasers , 2001 .

[11]  Stephan W Koch,et al.  Many-body effects in the gain spectra of highly excited quantum-dot lasers , 2001 .

[12]  Dieter Bimberg,et al.  Many-body effects on the optical spectra of InAs/GaAs quantum dots , 2000 .

[13]  D. Deppe,et al.  1.3 μm room-temperature GaAs-based quantum-dot laser , 1998 .

[14]  Dieter Bimberg,et al.  Gain and Threshold of Quantum Dot Lasers: Theory and Comparison to Experiments , 1997 .

[15]  L. Coldren,et al.  Diode Lasers and Photonic Integrated Circuits , 1995 .

[16]  H. Okamoto,et al.  Carrier-Induced Energy-Gap Shrinkage in Current-Injection GaAs/AlGaAs MQW Heterostructures , 1984 .