G. Millot
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View article: Wave turbulence, thermalization and multimode locking in optical fibers
Wave turbulence, thermalization and multimode locking in optical fibers Open
We present a comprehensive overview of recent advances in theory and experiments on complex light propagation phenomena in nonlinear multimode fibers. On the basis of the wave turbulence theory, we derive kinetic equations describing the o…
View article: Cascaded geometric parametric process in a tapered air–silica graded-like multimode microstructure fiber
Cascaded geometric parametric process in a tapered air–silica graded-like multimode microstructure fiber Open
We experimentally study the spatial beam profile and the spectral broadening at the output of a multimode air–silica microstructure fiber taper, used along the direction of an increasing fiber diameter. By using a laser pump at 1064 nm emi…
View article: High-gain far-detuned nonlinear frequency conversion in optical fibers: intramodal vs. intermodal processes
High-gain far-detuned nonlinear frequency conversion in optical fibers: intramodal vs. intermodal processes Open
We present theoretical and experimental evidence of high-gain far-detuned nonlinear frequency conversion, extending towards both the visible and the mid-infrared, in a few-mode graded-index silica fiber pumped at 1.064 $μ$m, and more speci…
View article: Near-Infrared Dual-Comb Spectroscopy of CO<sub>2</sub> and N<sub>2</sub>O with a Discretized Highly Nonlinear Fiber
Near-Infrared Dual-Comb Spectroscopy of CO<sub>2</sub> and N<sub>2</sub>O with a Discretized Highly Nonlinear Fiber Open
International audience
View article: Optimization of laser pumping for the generation of multi-pulse structures in fiber lasers
Optimization of laser pumping for the generation of multi-pulse structures in fiber lasers Open
We address the challenge of configuring a fiber laser cavity to enable efficient access to multi-pulse structures such as dissipative soliton molecules. We theoretically compare multi-pulsing routes in the parameter space of the laser. By …
View article: Stabilized single-frequency sub-kHz linewidth Brillouin fiber laser cavity operating at 1 µm
Stabilized single-frequency sub-kHz linewidth Brillouin fiber laser cavity operating at 1 µm Open
We experimentally demonstrate a stabilized single-frequency Brillouin fiber laser operating at 1.06 µm by means of a passive highly nonlinear fiber (HNLF) ring cavity combined with a phase-locking loop scheme. The stimulated Brillouin scat…
View article: Plug-and-Play Measurement of Chromatic Dispersion by Means of Two-Photon Interferometry
Plug-and-Play Measurement of Chromatic Dispersion by Means of Two-Photon Interferometry Open
International audience
View article: Near-infrared dual-comb spectroscopy of CO2 and N2O with a discretized highly nonlinear fiber
Near-infrared dual-comb spectroscopy of CO2 and N2O with a discretized highly nonlinear fiber Open
In this paper, we introduce an all-fibered dual-comb spectrometer based on a new design of highly nonlinear fiber to efficiently convert frequency combs from 1.55 micron to 2 micron We show that our spectrometer can be used to measure abso…
View article: Plug-and-play measurement of chromatic dispersion by means of two-photon interferometry
Plug-and-play measurement of chromatic dispersion by means of two-photon interferometry Open
Since the first proof-of-principle experiments 25 years ago, quantum metrology has matured from fundamental concepts to versatile and powerful tools in a large variety of research branches, such as gravitational-wave detection, atomic cloc…
View article: Strategies for accessing the multipulse regime of mode-locked fiber lasers
Strategies for accessing the multipulse regime of mode-locked fiber lasers Open
Important ongoing research on mode-locked fiber lasers aims at developing new\ntypes of multi-soliton regimes, such as soliton molecules, molecular complexes\nor soliton crystals. The on-demand generation of such multi-pulse structures is\…
View article: Observation of Light Thermalization to Negative-Temperature Rayleigh-Jeans Equilibrium States in Multimode Optical Fibers
Observation of Light Thermalization to Negative-Temperature Rayleigh-Jeans Equilibrium States in Multimode Optical Fibers Open
Although the temperature of a thermodynamic system is usually believed to be a positive quantity, under particular conditions, negative-temperature equilibrium states are also possible. Negative-temperature equilibriums have been observed …
View article: Observation of light thermalization to negative temperature Rayleigh-Jeans equilibrium states in multimode optical fibers
Observation of light thermalization to negative temperature Rayleigh-Jeans equilibrium states in multimode optical fibers Open
Although the temperature of a thermodynamic system is usually believed to be a positive quantity, under particular conditions, negative temperature equilibrium states are also possible. Negative temperature equilibriums have been observed …
View article: Effective strategy for accessing the multi-pulse regime of mode-locked fiber lasers
Effective strategy for accessing the multi-pulse regime of mode-locked fiber lasers Open
We unveil a strategy for configuring mode-locked fiber lasers by means of a tunable bandpass filter, which allows multi-pulse structures to be generated without distortions in their intensity profiles, with significantly reduced pumping po…
View article: Experimental demonstration of an optimized method to generate multi-pulse structures in mode-locked fibre laser
Experimental demonstration of an optimized method to generate multi-pulse structures in mode-locked fibre laser Open
We present here an experimental demonstration of a new method to access the multi-pulse regime in mode-locked fibre laser. This method allows us to drastically reduce the pumping power, while having a stable train of multiple pulses.
View article: Linewidth-narrowing and frequency noise reduction of Brillouin fiber laser cavity operating at 1-µm
Linewidth-narrowing and frequency noise reduction of Brillouin fiber laser cavity operating at 1-µm Open
We report on a stabilized single-frequency Brillouin fiber laser operating at 1.06 µm by means of a passive highly nonlinear fiber ring cavity combined with a phase-locking loop scheme. We show significant linewidth narrowing (below 1-kHz)…
View article: Preface
Preface Open
The European Optical Society Annual Meeting, EOSAM, is a major international scientific conference covering all aspects of optics and photonics, through plenary and topical sessions, tutorials and industry exhibition.EOSAM was celebrated t…
View article: Mid-infrared generation beyond 3.5 µm in a graded-index silica fiber
Mid-infrared generation beyond 3.5 µm in a graded-index silica fiber Open
We present theoretical as well as experimental evidence of far-detuned nonlinear wavelength conversion towards the mid-infrared, namely beyond 3.5 µm, in a few-mode graded-index silica fiber pumped at 1.064 µm. We take into account the ful…
View article: Thermalization of light waves in multimode optical fibers: Negative temperatures equilibrium states and the role of disorder - INVITED
Thermalization of light waves in multimode optical fibers: Negative temperatures equilibrium states and the role of disorder - INVITED Open
Nonlinear random waves exhibit a phenomenon of irreversible thermalization, in analogy with the thermalization of a classical gas system. This irreversible process of thermalization to the Rayleigh-Jeans equilibrium distribution has been r…
View article: Higher-order dispersion parameters management in highly nonlinear photonic crystal fibers for far-detuned frequency conversion
Higher-order dispersion parameters management in highly nonlinear photonic crystal fibers for far-detuned frequency conversion Open
International audience
View article: Rapid characterisation of Photonic Crystal Fibre dispersive properties by a stochastic and tunable picosecond pump source
Rapid characterisation of Photonic Crystal Fibre dispersive properties by a stochastic and tunable picosecond pump source Open
International audience
View article: Interplay of Thermalization and Strong Disorder: Wave Turbulence Theory, Numerical Simulations, and Experiments in Multimode Optical Fibers
Interplay of Thermalization and Strong Disorder: Wave Turbulence Theory, Numerical Simulations, and Experiments in Multimode Optical Fibers Open
We address the problem of thermalization in the presence of a time-dependent disorder in the framework of the nonlinear Schrödinger (or Gross-Pitaevskii) equation with a random potential. The thermalization to the Rayleigh-Jeans distributi…
View article: Dispersion engineered tapered photonic crystal fiber for broadband and tuned 2 µm emission using degenerate four-wave mixing
Dispersion engineered tapered photonic crystal fiber for broadband and tuned 2 µm emission using degenerate four-wave mixing Open
International audience
View article: Interplay of thermalization and strong disorder: Wave turbulence theory, numerical simulations, and experiments in multimode optical fibers
Interplay of thermalization and strong disorder: Wave turbulence theory, numerical simulations, and experiments in multimode optical fibers Open
We address the problem of thermalization in the presence of a time-dependent disorder in the framework of the nonlinear Schrödinger (or Gross-Pitaevskii) equation with a random potential. The thermalization to the Rayleigh-Jeans distributi…
View article: Isotope ratio dual-comb spectrometer
Isotope ratio dual-comb spectrometer Open
We demonstrate the use of dual-comb spectroscopy for isotope ratio measurements. We show that the analysis spectral range of a free-running near-infrared dual-comb spectrometer can be extended to the midinfrared by difference frequency gen…
View article: Design and fabrication of dispersion controlled highly nonlinear fibers for far-detuned four-wave mixing frequency conversion
Design and fabrication of dispersion controlled highly nonlinear fibers for far-detuned four-wave mixing frequency conversion Open
We report on the conception, fabrication and characterization of a new concept of optical fiber enabling a precise control of the ratio between the 2 nd and 4 th -order of chromatic dispersion (respectively β 2 and β 4 ) at 1.55 µm which i…
View article: Weak Langmuir turbulence in disordered multimode optical fibers
Weak Langmuir turbulence in disordered multimode optical fibers Open
We consider the propagation of temporally incoherent waves in multimode\noptical fibers (MMFs) in the framework of the multimode nonlinear Schr\\"odinger\n(NLS) equation accounting for the impact of the natural structural disorder\nthat af…