Results 11 to 20 of about 263,472 (374)
Semiclassical theory of noise in multielement semiconductor lasers [PDF]
We present a derivation of the noise spectra of multielement semiconductor lasers. We model the noise by a set of Langevin sources which drive a system of small-signal field equations. The Langevin sources are normalized to transition rates within the laser and general formulas for relative intensity, frequency fluctuation, and field spectra are ...
Lang, Robert J., Yariv, Amnon
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We investigate experimentally and theoretically the dynamics of a semiconductor laser subject to filtered optical feedback. Depending on the feedback strength we find dynamical regimes with different dependence on the feedback phase.
H. Erzgräber+4 more
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Theory of optical modes in semiconductor microdisk lasers [PDF]
A method for the calculation of optical modes in disk-like resonant cavities is presented. The eigenvalue equation for resonant wavelengths and threshold optical gain as well as the optical field distribution is established. The characteristics of the optical modes in microdisk lasers are studied using this method.
Ruo Peng Wang, Maria-Manuela Dumitrescu
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Theory of microscopic semiconductor lasers with external optical feedback
The properties of microscopic semiconductor lasers with external optical feedback are theoretically analysed. The size-dependence of the critical feedback level, at which the laser first becomes unstable, is clarified, showing how the dominant indicator of feedback stability is the gain of the laser, irrespective of size.
T. Rasmussen, Jesper Mørk
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We exploit the coupled emission-states of a single-chip semiconductor InAs/GaAs quantum-dot laser emitting simultaneously on ground-state (λ(GS) = 1245 nm) and excited-state (λ(ES) = 1175 nm) to demonstrate coupled-two-state self-mixing velocimetry for a
Mariangela Gioannini+6 more
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A SEMICLASSICAL THEORY OF NEGATIVE FEEDBACK SEMICONDUCTOR LASER [PDF]
In this paper, a semiclassical rate equation model has been established and the FM noise power spectrum calculated. We show that the spectral line width can be narrowed by the negative electrical feedback technique. Within the feedback loop bandwidth, the chirp-power-ratio (CPR) is reduced by a factor of 1+H, it shows that this kind of laser can be ...
Jianping Zhang, Ling Li, Peida Ye
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Theory for passive mode-locking in semiconductor laser structures including the effects of self-phase modulation, dispersion, and pulse collisions [PDF]
We present a theory for passive mode-locking in semiconductor laser structures using a semiconductor laser amplifier and absorber. The mode-locking system is described in terms of the different elements in the semiconductor laser structure.
R.G.M.P. Koumans, R. van Roijen
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Theory of a multimode semiconductor laser with optical feedback
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Carr, T. W.+2 more
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Statistical Properties of an External-Cavity Semiconductor Laser: Experiment and Theory
Nianqiang Li+4 more
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New Evidence for a Nonclassical Behavior of Laser Multimode Light
In this work, we present new experimental evidence of a nonclassical behavior of a multimode Fabry–Perot (FP) semiconductor laser by the measurements of intensity correlation functions.
Michael Lebedev+3 more
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