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Derivation of gain spectra of laser diodes from spontaneous emission measurements
Paul Rees,P. Blood +1 more
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In this article, the authors show that with a more exact implementation of spectral broadening thermal equilibrium is preserved and that the relationship between absorption and emission remains valid and discuss the accuracy of the measurements required to obtain a correct gain spectra.Abstract:
The use of detailed balance relationships between absorption and emission to obtain a gain spectrum from a spontaneous emission spectrum is a relatively easy method of measuring the gain from a semiconductor laser. It has been shown that the usual theoretical gain and emission spectra do not satisfy these relationships casting doubt on the validity of the procedure. We show that this arises from the incorrect implementation of spectral broadening that leads to a situation where the carriers and photons are no longer in thermal equilibrium and the relationship between absorption and gain in the calculations breaks down. We show that with a more exact implementation of spectral broadening thermal equilibrium is preserved and that the relationship between absorption and emission remains valid. We discuss the accuracy of the measurements required to obtain a correct gain spectra. >read more
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Journal ArticleDOI
Simulation of carrier transport and nonlinearities in quantum-well laser diodes
M. Grupen,Karl Hess +1 more
TL;DR: The two-dimensional (2D) quantum-well (QW) laser diode simulator Minilase-II is presented in detail in this paper, which contains a complete treatment of carrier dynamics including bulk transport, quantum carrier capture, spectral hole burning, and quantum carrier heating.
Journal ArticleDOI
Intraband relaxation time effects on non-Markovian gain with many-body effects and comparison with experiment
TL;DR: In this paper, a Gaussian line shape gain model with a constant intraband relaxation time gives good agreement with experimental gain spectra and the inclusion of k-dependent intrband relaxation time yields slightly improved agreement.
Journal ArticleDOI
Optical gain of a quantum-well laser with non-Markovian relaxation and many-body effects
TL;DR: In this article, a theoretical description of the optical gain of a quantum-well laser is developed taking into account non-Markovian relaxation and many-body effects, and it is shown that the gain spectra depend strongly on the correlation time of the system which can be determined by the intraband frequency fluctuations.
Journal ArticleDOI
Theory of non-Markovian gain in strained-layer quantum-well lasers with many-body effects
TL;DR: In this article, a non-Markovian model for the optical gain of strained-layer quantum-well lasers is developed taking into account the valence-band mixing, strain effects, many-body effects, and the non-markovian relaxation using the time-convolutionless reduced-density operator formalism for an arbitrary driven system coupled to a stochastic reservoir.
References
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Long-wavelength semiconductor lasers
TL;DR: In this paper, the current status and future applications of lightwave transmission of longwavelength semiconductor lasers emitting near 1.3 and 1.55-mu m are described, and bit-error-rate curves for a transmission experiment at 8 Gb/s over 76 km of fiber are shown.
Journal ArticleDOI
Gain spectra in GaAs double−heterostructure injection lasers
Basil W. Hakki,Thomas L. Paoli +1 more
TL;DR: Gain spectra for GaAs double-heterostructure junction lasers have been obtained with high resolution by using an automated data aquisition system to analyze the Fabry−Perot resonance modulation in the spontaneous emission spectra as mentioned in this paper.
Journal ArticleDOI
Measurement of gain and absorption spectra in AlGaAs buried heterostructure lasers
TL;DR: In this article, a new method for measuring absorption and gain spectra of lasers is presented, which is based on the application of general relations between the rates of spontaneous emission, stimulated emission, and optical absorption.
Journal ArticleDOI
Intraband relaxation time in quantum-well lasers
TL;DR: In this paper, the authors considered carrier-carrier and carrier-longitudinal-optical (LO) phonon scattering mechanisms, and showed that hole-hole, electron-hole and hole-LO phonon scaling are dominant in spectral broadening.
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