ABSTRACT We report on an integrated source of twin photons at telecom wavelength operating at roo... more ABSTRACT We report on an integrated source of twin photons at telecom wavelength operating at room temperature, in which a pump beam impinging on top of an AlGaAs waveguide generates two counterpropagating, orthogonally polarized guided modes by parametric fluorescence. This scheme allows an unprecedented flexibility in controlling the quantum properties of the emitted photons, by a simple shaping of the spatial and spectral profiles of the pump. The source versatility permits us to tailor the degree of frequency correlation and the spectrum of the emitted photons.
ABSTRACT Thermal crosstalk in a diode array has been investigated using a time-resolved technique... more ABSTRACT Thermal crosstalk in a diode array has been investigated using a time-resolved technique. The transmission of a probe beam injected into any of the array diodes is measured while one of them is alternatively switched on and off. The dynamics of temperature evolution of each diode and the thermal crosstalk owing to lateral heat spreading are deduced from temperature-induced Fabry-Perot oscillations.
ABSTRACT We report on an integrated source of twin photons at telecom wavelength operating at roo... more ABSTRACT We report on an integrated source of twin photons at telecom wavelength operating at room temperature, in which a pump beam impinging on top of an AlGaAs waveguide generates two counterpropagating, orthogonally polarized guided modes by parametric fluorescence. This scheme allows an unprecedented flexibility in controlling the quantum properties of the emitted photons, by a simple shaping of the spatial and spectral profiles of the pump. The source versatility permits us to tailor the degree of frequency correlation and the spectrum of the emitted photons.
ABSTRACT Thermal crosstalk in a diode array has been investigated using a time-resolved technique... more ABSTRACT Thermal crosstalk in a diode array has been investigated using a time-resolved technique. The transmission of a probe beam injected into any of the array diodes is measured while one of them is alternatively switched on and off. The dynamics of temperature evolution of each diode and the thermal crosstalk owing to lateral heat spreading are deduced from temperature-induced Fabry-Perot oscillations.
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Papers by X. Caillet