Zobrazeno 1 - 10
of 526
pro vyhledávání: '"AMRA, Claude"'
Autor:
Jean, Maxime Le, Degallaix, Jerome, Hofman, David, Pinard, Laurent, Forest, Danièle, Granata, Massimo, Michel, Christophe, Steinlechner, Jessica, Amra, Claude, Lequime, Michel, Zerrad, Myriam
A new generation of gravitational wave detectors is currently being designed with the likely use of a different laser wavelength compared to current instruments. The estimation of the optical losses for this new wavelength is particularly relevant to
Externí odkaz:
http://arxiv.org/abs/2409.13357
In this paper, we aim to reconstruct an n-dimensional real vector from m phaseless measurements corrupted by an additive noise. We extend the noiseless framework developed in [15], based on mirror descent (or Bregman gradient descent), to deal with n
Externí odkaz:
http://arxiv.org/abs/2405.10754
In this paper, we show how the combined use of low coherence interferometry, balanced detection and data processing comparable to that used in Fourier transform spectrometry allows us to characterize with ultimate resolutions (sub-ppm in level, 0.2 n
Externí odkaz:
http://arxiv.org/abs/2301.09085
The measurement of very low reflection coefficients of anti-reflective coated interfaces has become a key issue for the realization of precision instruments such as the giant interferometers used for the detection of gravitational waves. We propose i
Externí odkaz:
http://arxiv.org/abs/2211.16013
Autor:
Godeme, Jean-Jacques, Fadili, Jalal, Buet, Xavier, Zerrad, Myriam, Lequime, Michel, Amra, Claude
In this paper, we consider the problem of phase retrieval, which consists of recovering an $n$-dimensional real vector from the magnitude of its $m$ linear measurements. We propose a mirror descent (or Bregman gradient descent) algorithm based on a w
Externí odkaz:
http://arxiv.org/abs/2210.09248
Autor:
Lequime, Michel, Amra, Claude
An exact formulation of the propagation of a monochromatic wave packet impinging upon a transparent, homogeneous, isotropic and parallel slab at oblique incidence is presented. Approximate formulas are derived for low divergence Gaussian light beams.
Externí odkaz:
http://arxiv.org/abs/1712.05553
Autor:
Eles Balint, Rouquette Paul, Siegel Jan, Amra Claude, Lumeau Julien, Moreau Antonin, Hubert Christophe, Zerrad Myriam, Destouches Nathalie
Publikováno v:
Nanophotonics, Vol 11, Iss 10, Pp 2303-2318 (2022)
Laser-induced transformations of plasmonic metasurfaces pave the way for controlling their anisotropic optical response with a micrometric resolution over large surfaces. Understanding the transient state of matter is crucial to optimize laser proces
Externí odkaz:
https://doaj.org/article/8bcd30939f2f4d7db07ad896151f3ef3
We propose solar-shaped thermal concentrators designed with orthoradial layers and obtained in practice through the homogenization of an ideal thermal concentrator. Considering the spectral regime of the heat equation, we quantitatively evaluate at d
Externí odkaz:
http://arxiv.org/abs/1508.05081
Autor:
Amra, Claude, Petiteau, David, Zerrad, Myriam, Guenneau, Sébastien, Soriano, Gabriel, Gralak, Boris, Bellieud, Michel, Veynante, Denis, Rolland, Nathalie
A new analogy between optical propagation and heat diffusion in heterogeneous anisotropic media has been proposed recently [S. Guenneau, C. Amra, and D. Veynante, Optics Express Vol. 20, 8207-8218 (2012)]. A detailed derivation of this unconventional
Externí odkaz:
http://arxiv.org/abs/1503.00862