40 citations · 279 across the 23 of their papers we have counts for
23 papers
Ultra-narrow linewidth self-adaptive photonic oscillator : principle and realization
Mehdi Alouini, Gwennael Danion, Marc Vallet
Highly coherent optical sources are a key element in several fields of physics, in particular in time frequency metrology. Over the past decennia, there has been particular efforts…
Imaging through fog using quadrature lock-in discrimination
Shashank Kumar, Bapan Debnath, Meena M. S. +5
We report experiments conducted in the field in the presence of fog, that were aimed at imaging under poor visibility. By means of intensity modulation at the source and two-dimens…
Label-free microscopy of mitotic chromosomes using the polarization Orthogonality Breaking technique
R. Desapogu, G. Le Marchand, R. Smith +7
The vast majority of the microscopy methods currently available to study biological samples require staining prior to imaging. Nevertheless, the ability to reveal specific cell str…
An all-optical technique enables instantaneous single-shot demodulation of images at high frequency
Swapnesh Panigrahi, Julien Fade, Romain Agaisse +2
High-frequency demodulation of wide area optical signals in a snapshot manner is a technological challenge that, if solved, could open tremendous perspectives in 3D imaging, free-s…
Optoelectronic nibbling of laser linewidth using a Brillouin-assisted optical phase-locked loop
Gwennael Danion, Marc Vallet, Ludovic Frein +2
We demonstrate that the implementation of phase-locked loop forbidding multimode operation of a long Brillouin resonator also leads to a dramatic reduction of the optical phase noi…
Intensity noise self-regulated solid-state laser at 1.5m using an ASHG based Buffer Reservoir
Kevin Audo, Mehdi Alouini
An absorption mechanism based on second-harmonic generation (ASHG) is successfully implemented as a buffer reservoir in a solid-state Er,Yb:Glass laser emitting at telecom waveleng…
Theoretical optimal modulation frequencies for scattering parameter estimation and ballistic photon filtering in diffusive media
Swapnesh Panigrahi, Julien Fade, Hema Ramachandran +1
The efficiency of using intensity modulated light for estimation of scattering properties of a turbid medium and for ballistic photon discrimination is theoretically quantified in…
Orthogonality breaking sensing model based on the instantaneous Stokes vector and the Mueller calculus
Noé Ortega-Quijano, Julien Fade, Muriel Roche +2
Polarimetric sensing by orthogonality breaking has been recently proposed as an alternative technique for performing direct and fast polarimetric measurements using a specific dual…
Real-time quadrature lock-in discrimination imaging through scattering media
Sriram Sudarsanam, James Mathew, Swapnesh Panigrahi +3
Numerous everyday situations like navigation, medical imaging and rescue operations require viewing through optically inhomogeneous media. This is a challenging task as photons, in…
Intensity and phase noise correlations in a dual-frequency VECSEL operating at telecom wavelength
Syamsundar De, Ghaya Baili, Sophie Bouchoule +2
The amplitude and phase noises of a dual-frequency vertical-external-cavity surface-emitting laser (DF-VECSEL) operating at telecom wavelength are theoretically and experimentally…
Adaptive polarimetric image representation for contrast optimization of a polarized beacon through fog
Swapnesh Panigrahi, Julien Fade, Mehdi Alouini
We present a contrast-maximizing optimal linear representation of polarimetric images obtained from a snapshot polarimetric camera for enhanced vision of a polarized light source i…
Optoelectronic down-conversion by four-wave mixing in a highly nonlinear fiber for millimeter-wave and THz phase-locking
Antoine Rolland, Lucien Pouget, Marc Brunel +1
Optoelectronic down-conversion of a THz optical beatnote to a RF intermediate frequency is performed with a standard Mach-Zehnder modulator followed by a zero dispersion-slope fibe…
Phase Noise of the Radio Frequency (RF) Beatnote Generated by a Dual-Frequency VECSEL
Syamsundar De, Abdelkrim El Amili, Ihsan Fsaifes +6
We analyze, both theoretically and experimentally, the phase noise of the radio frequency (RF) beatnote generated by optical mixing of two orthogonally polarized modes in an optica…
Experimental evidence and theoretical modeling of two-photon absorption dynamics in the reduction of intensity noise of solid-state Er:Yb lasers
Abdelkrim El Amili, Gaël Kervella, Mehdi Alouini
A theoretical and experimental investigation of the intensity noise reduction induced by two-photon absorption in a Er,Yb:Glass laser is reported. The time response of the two-phot…
Experimental demonstration of a dual-frequency laser free from anti-phase noise
Abdelkrim El Amili, Gouc'Hen Loas, Syamsundar De +5
A reduction of more than 20 dB of the intensity noise at the anti-phase relaxation oscillation frequency is experimentally demonstrated in a two-polarization dual-frequency solid-s…
Depolarization remote sensing by orthogonality breaking
Julien Fade, Mehdi Alouini
A new concept devoted to sensing the depolarization strength of materials from a single measurement is proposed and successfully validated on a variety of samples. It relies on the…
Experimental study of the delayed threshold phenomenon in a semiconductor laser
Abdelkrim El Amili, Grégory Gredat, Mehdi Alouini +2
An experimental study of the delayed threshold phenomenon in a Vertical Extended Cavity Semiconductor Emitting Laser is carried out. Under modulation of the pump power, the laser i…
Observation of noise phase locking in a single-frequency VECSEL
A. El Amili, V. Pal, F. Goldfarb +4
We present an experimental observation of phase locking effects in the intensity noise spectrum of a semiconductor laser. These noise correlations are created in the medium by cohe…
Observation of slow light in the noise spectrum of a vertical external cavity surface emitting laser
A. El Amili, B. -X. Miranda, F. Goldfarb +5
The role of coherent population oscillations is evidenced in the noise spectrum of an ultra-low noise lasers. This effect is isolated in the intensity noise spectrum of an optimize…
Experimental demonstration of enhanced slow and fast light by forced coherent population oscillations in a SOA
Perrine Berger, Jerome Bourderionnet, Guilhem de Valicourt +4
We experimentally demonstrate enhanced slow and fast light by forced coherent population oscillations (CPOs) in a SOA. This approach is shown to rely on the interference between tw…
Dynamic saturation in semiconductor optical amplifiers: accurate model, role of carrier density, and slow light
Perrine Berger, Mehdi Alouini, Jerome Bourderionnet +2
We developed an improved model in order to predict the RF behavior and the slow light properties of the SOA valid for any experimental conditions. It takes into account the dynamic…
Theoretical Study of the Spurious-Free Dynamic Range of a Tunable Delay Line based on Slow Light in SOA
Perrine Berger, Jerome Bourderionnet, Mehdi Alouini +2
We developed a predictive model describing harmonic generation and intermodulation distortions in semiconductor optical amplifiers (SOAs). This model takes into account the variati…
Direct Observation of the Class-B to Class-A Transition in the Dynamical Behavior of a Semiconductor Laser
Ghaya Baili, Mehdi Alouini, Thierry Malherbe +3
The transition between the class-B and class-A dynamical behaviors of a semiconductor laser is directly observed by continuously controlling the lifetime of the photons in a cavity…