Topic
Spontaneous emission
About: Spontaneous emission is a research topic. Over the lifetime, 12855 publications have been published within this topic receiving 323684 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a time-domain travelling-wave model for the simulation of passive mode-locking in quantum dot (QD) lasers is presented, where accurate expressions for the time varying QD optical susceptibility and the QD spontaneous emission noise source are introduced in the 1-D wave equations and numerically described using a set of infinite-impulse response filters.
Abstract: We present a time-domain travelling-wave model for the simulation of passive mode-locking in quantum dot (QD) lasers; accurate expressions for the time varying QD optical susceptibility and the QD spontaneous emission noise source are introduced in the 1-D wave equations and numerically described using a set of infinite-impulse response filters. The inhomogeneous broadening of the density of states of the whole QD ensemble as well as the homogeneous linewidth of each QD interband transition are properly taken into account in the model. Population dynamics in the QD, quantum well, and barrier states under both forward and reverse bias conditions are modeled via proper sets of multi-population rate equations coupled with the field propagation equations. The model is first applied to the study of gain and absorption recovery in a QD semiconductor optical amplifier under both forward and reverse bias conditions. Simulations of passive mode-locking in a two-section QD laser are then performed as a function of the bias parameters. Gain and absorption dynamics leading to the generation of mode-locking pulses is described. The onset of a trailing-edge instability at low currents is observed and fully explained in the framework of the described model.
81 citations
TL;DR: In this article, the spontaneous emission inside an injection-locked semiconductor laser does not alter the lasing field and the linewidth is only governed by the injected-field phase noise and may no longer follow the Schawlow Townes dependence on emitted optical power.
Abstract: We show that the spontaneous emission inside an injection-locked semiconductor laser does not alter the lasing field. For injection at the free-running frequency, the linewidth is only governed by the injected-field phase noise and may no longer follow the Schawlow-Townes dependence on emitted optical power.
81 citations
TL;DR: In this article, the spectroscopic properties of bismuth borate glasses doped with 0.1 and 0.5 mol% Er2O3 are investigated and the results indicate the potentiality of the Er3+ ions doped glasses as laser and fiber amplifier media.
81 citations
TL;DR: In this paper, the authors investigated the effect of light scattering by impurity atoms inside dielectric cubic lattices in the point-dipole limit and showed that the substitutional case occurs prevalently.
Abstract: Resonant classical light scattering by impurity atoms inside dielectric cubic lattices is investigated in the point-dipole limit. Modifications to resonance frequencies and linewidths are shown to be different for substitutional and interstitial impurities. Spontaneous emission rates inside dielectrics exhibit the well-known empty-cavity and Lorentz local-field factors for substitutional and interstitial atoms, respectively. The results are generalized to disordered dielectrics, indicating that the substitutional case occurs prevalently for impurity atoms. [S0031-9007(98)06814-8]
81 citations
TL;DR: In this paper, the influence of a strong resonant driving field on the spectral properties of a single cavity-confined, two-level atom was studied under conditions of atom-cavity resonance, and the lines of the Mollow resonance fluorescence triplet were found to narrow with increasing driving field strength.
Abstract: We study the influence of a strong resonant driving field on the spectral properties of a single, cavity-confined, two-level atom Under conditions of atom-cavity resonance, the lines of the Mollow resonance fluorescence triplet are found to narrow with increasing driving field strength, indicating a dynamical decoupling of the atom from the vacuum field
81 citations