Zobrazeno 1 - 10
of 433
pro vyhledávání: '"Alouini Mehdi"'
Autor:
Brunel Marc, Frein Ludovic, Loas Goulc’hen, Carré Anthony, Le Beux Thomas, Tolba Nacim, Alouini Mehdi, Guillet de Chatellus Hugues, Vallet Marc
Publikováno v:
EPJ Web of Conferences, Vol 287, p 07015 (2023)
A phase-modulated frequency-shifting loop is injected by a single-frequency laser at 1.5 μm. In so-called Talbot conditions, i.e., when the modulation frequency is an integer multiple of the inverse of the cavity round-trip time, the loop generates
Externí odkaz:
https://doaj.org/article/0077e19bd8af4c298f8c3265e7f0c3ce
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 in developing such sources to the expense of sophisticated laser syst
Externí odkaz:
http://arxiv.org/abs/2108.03468
Autor:
Kumar, Shashank, Debnath, Bapan, S., Meena M., Fade, Julien, Dhar, Sankar, Alouini, Mehdi, Bretenaker, Fabien, Ramachandran, Hema
Publikováno v:
OSA Continuum Vol. 4, Issue 5, pp. 1649-1657 (2021)
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-dimensional quadrature lock-in detection by software at the receiver, a sign
Externí odkaz:
http://arxiv.org/abs/2105.08524
Akademický článek
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Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 3, p 08002 (2008)
We address precision of estimation of the degree of polarization (DOP) from the orthogonal state contrast image (OSCI) in the presence of both signal-dependent Poisson noise due to useful signal, and additive Poisson noise due to dark current and / o
Externí odkaz:
https://doaj.org/article/0892f33c204d40f0b561417b69c27df7
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-space communications, or even ballistic photon imaging in highly scatte
Externí odkaz:
http://arxiv.org/abs/1909.05366
Microwave photonics uses light to carry and process microwave signals over a photonic link. However, light can instead be used as a stimulus to microwave devices that directly control microwave signals. Such optically controlled amplitude and phase-s
Externí odkaz:
http://arxiv.org/abs/1905.05228
Akademický článek
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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 noise of the pump itself. In the case of a continuous Er,Yb:glass laser,
Externí odkaz:
http://arxiv.org/abs/1808.08169
Intensity noise self-regulated solid-state laser at 1.5${\mu}$m using an ASHG based Buffer Reservoir
Autor:
Audo, Kevin, Alouini, Mehdi
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 wavelength. We show that a slight ASHG rate conversion of 0.016% using a BBO c
Externí odkaz:
http://arxiv.org/abs/1708.07654