Zobrazeno 1 - 10
of 388
pro vyhledávání: '"Barthélémy, Alain"'
Autor:
Shpakovych, Maksym, Maulion, Geoffrey, Kermene, Vincent, Boju, Alexandre, Armand, Paul, Desfarges-Berthelemot, Agnès, Barthelemy, Alain
An innovative scheme is proposed for the dynamic control of phase in two-dimensional laser beam array. It is based on a simple neural network that predicts the complex field array from the intensity of the induced scattered pattern through a phase in
Externí odkaz:
http://arxiv.org/abs/2012.05647
Autor:
Krupa, Katarzyna, Couderc, Vincent, Tonello, Alessandro, Modotto, Daniele, Barthélémy, Alain, Millot, Guy, Wabnitz, Stefan
We introduce the concept of spatial and spectral control of nonlinear parametric sidebands in multimode optical fibers by tailoring their linear refractive index profile. In all cases, the pump experiences Kerr self-cleaning, leading to a bell-shaped
Externí odkaz:
http://arxiv.org/abs/1812.03202
We report an improved scheme for the measurement of the transmission matrix of multimode waveguides in which the reference field co-propagates with the signal wave. The performance of the technique is demonstrated with the measurement of a 1.6 m long
Externí odkaz:
http://arxiv.org/abs/1806.09315
Autor:
Wabnitz, Stefan, Tonello, Alessandro, Couderc, Vincent, Modotto, Daniele, Barthelemy, Alain, Millot, Guy, Krupa, Katarzyna
Publikováno v:
Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105402B (2018)
We overview recent advances in the research on spatiotemporal beam shaping in nonlinear multimode optical fibers. An intense light beam coupled to a graded index (GRIN) highly multimode fiber undergoes a series of complex nonlinear processes when its
Externí odkaz:
http://arxiv.org/abs/1802.09470
Ultrashort light pulse transport and amplification in a 1.3 m long step-index multimode fiber with gain and with weak coupling has been investigated. An adaptive shaping of the input wavefront, only based on the output intensity pattern, has led to a
Externí odkaz:
http://arxiv.org/abs/1712.05738
Autor:
Krupa, Katarzyna, Tonello, Alessandro, Couderc, Vincent, Barthélémy, Alain, Millot, Guy, Modotto, Daniele, Wabnitz, Stefan
Publikováno v:
published in Phys. Rev. A 97, 043836 (2018)
We experimentally demonstrate simultaneous spatial and temporal compression in the propagation of light pulses in multimode nonlinear optical fibers. We reveal that the spatial beam self-cleaning recently discovered in graded-index multimode fibers i
Externí odkaz:
http://arxiv.org/abs/1711.11478
Autor:
Krupa, Katarzyna, Tonello, Alessandro, Shalaby, Badr M., Fabert, Marc, Barthélémy, Alain, Millot, Guy, Wabnitz, Stefan, Couderc, Vincent
Multimode optical fibres are enjoying a renewed attention, boosted by the urgent need to overcome the current capacity crunch of single-mode fibre systems and by recent advances in multimode complex nonlinear optics [1-13]. In this work, we demonstra
Externí odkaz:
http://arxiv.org/abs/1603.02972
Autor:
Krupa, Katarzyna, Tonello, Alessandro, Barthélémy, Alain, Couderc, Vincent, Shalaby, Badr Mohamed, Bendahmane, Abdelkrim, Millot, Guy, Wabnitz, Stefan
Publikováno v:
Phys. Rev. Lett. 116, 183901 (2016)
Spatio-temporal mode coupling in highly multimode physical systems permits new routes for exploring complex instabilities and forming coherent wave structures. We present here the first experimental demonstration of multiple geometric parametric inst
Externí odkaz:
http://arxiv.org/abs/1602.04991
Autor:
Modotto, Daniele, Andreana, Marco, Krupa, Katarzyna, Manili, Gabriele, Minoni, Umberto, Tonello, Alessandro, Couderc, Vincent, Barthélémy, Alain, Labruyère, Alexis, Shalaby, Badr Mohammed, Leproux, Philippe, Wabnitz, Stefan, Aceves, Alejandro B.
We describe the generation of powerful dispersive waves that are observed when pumping a dual concentric core microstructured fiber by means of a sub-nanosecond laser emitting at the wavelength of~1064 nm. The presence of three zeros in the dispersio
Externí odkaz:
http://arxiv.org/abs/1506.08223
Autor:
Tonello, Alessandro, Modotto, Daniele, Krupa, Katarzyna, Labruyère, Alexis, Shalaby, Badr, Couderc, Vincent, Barthélémy, Alain, Minoni, Umberto, Wabnitz, Stefan, Aceves, Alejandro B.
Publikováno v:
IEEE Photonics Technology Letters v.27, 1145, 2015
Soliton-soliton collisions have a crucial role in enhancing the spectrum of dispersive waves in optical fibers and collisions among in-phase solitons lead to a dramatic enhancement of the dispersive wave power, as well as to its significant spectral
Externí odkaz:
http://arxiv.org/abs/1412.8227