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Chapitre D'ouvrage Année : 2017

Widely Tunable Quantum-Dot Source Around 3 μm

Marco Ravaro
  • Fonction : Auteur
  • PersonId : 860553
Jean-Michel Gérard
Bruno Gérard
  • Fonction : Auteur
EDF
Ivan Favero

Résumé

We propose a widely tunable parametric source in the 3 μm range, based on intracavity spontaneous parametric down conversion (SPDC) of a quantum-dot (QD) laser emitting at 1.55 μm into signal and idler modes around 3.11 μm. To compensate for material dispersion, we engineer the laser structure to emit in a higher-order transverse mode of the waveguide. The width of the latter is used as a degree of freedom to reach phase matching in narrow, deeply etched ridges, where the in-plane confinement of the QDs avoids nonradiative sidewall electron-hole recombination. Since this design depends critically on the knowledge of the refractive index of In1−xGaxAsyP1−y lattice matched to InP at wavelengths where no data are available in the literature, we have accurately determined them as a function of wavelength (λ = 1.55, 2.12 and 3 μm) and arsenic molar fraction (y = 0.55, 0.7 and 0.72) with a precision of ±4 × 10−3. A pair of dichroic dielectric mirrors on the waveguide facets is shown to result in a continuous-wave optical parametric oscillator (OPO), with a threshold around 60 mW. Emission is tunable over hundreds of nanometers and expected to achieve mW levels.
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Dates et versions

hal-01990228 , version 1 (22-01-2019)

Identifiants

  • HAL Id : hal-01990228 , version 1

Citer

Alice Bernard, Marco Ravaro, Jean-Michel Gérard, Michel Krakowski, Olivier Parillaud, et al.. Widely Tunable Quantum-Dot Source Around 3 μm. Quantum-dot Based Light-emitting Diodes, InTech, 2017. ⟨hal-01990228⟩
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