Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Valérie Doya"'
Publikováno v:
Fiber Lasers XV: Technology and Systems.
Ever extending applications of fiber lasers require energy efficient, high-power, small footprint and reliable fiber lasers and laser wavelength versatility. To meet these demands, next generation of active fibers for high-power fiber lasers is comin
Publikováno v:
Micro-structured and Specialty Optical Fibres V.
High-power operation of fiber lasers was enabled by the invention of cladding-pumping in a double-clad fiber structure. Because of existence of so called skew rays in the inner clad of the fiber, pump absorption saturates along the fiber and pumping
Publikováno v:
Fiber Lasers XIV: Technology and Systems.
High-power fiber lasers became important devices in many industrial and health care fields. The key for high-power operation of fiber lasers is the double-clad fiber technology transforming lower-brightness pumps into high-brightness laser beams. Eff
Publikováno v:
Physical Review E
Physical Review E, American Physical Society (APS), 2016, 93 (2), pp.022201. ⟨10.1103/PhysRevE.93.022201⟩
Physical Review E, American Physical Society (APS), 2016, 93 (2), pp.022201. ⟨10.1103/PhysRevE.93.022201⟩
A multimode optical fiber with a truncated transverse cross section acts as a powerful versatile support to investigate the wave features of complex ray dynamics. In this paper, we concentrate on the case of a geometry inducing a mixed dynamics. We h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88e06228536aa3c09e89dfa586405b09
https://hal.archives-ouvertes.fr/hal-01278101
https://hal.archives-ouvertes.fr/hal-01278101
Autor:
Pierre Aschieri, Valérie Doya
Publikováno v:
Optics Communications
Optics Communications, Elsevier, 2010, 283 (19), pp.3673. ⟨10.1016/j.optcom.2010.05.026⟩
Optics Communications, Elsevier, 2010, 283 (19), pp.3673. ⟨10.1016/j.optcom.2010.05.026⟩
International audience; The purpose of this article is to analyze the impact of an index segmentation on the ray dispersion in the geometrical approach. The presented study re- veals that a periodic index segmentation of the waveguide along with a tr
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics
IEEE Journal of Selected Topics in Quantum Electronics, Institute of Electrical and Electronics Engineers, 2015, 22 (2), pp.4401508. ⟨10.1109/JSTQE.2015.2490100⟩
IEEE Journal of Selected Topics in Quantum Electronics, Institute of Electrical and Electronics Engineers, 2015, 22 (2), pp.4401508. ⟨10.1109/JSTQE.2015.2490100⟩
International audience; We report the analysis of multimode pump absorption in double-clad rare-earth-doped fibers under realistic bending conditions. The finite-element beam-propagation method is used for the analysis. The fiber bending is approxima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::785b9824be90416e553283eec6ed7a82
https://hal.archives-ouvertes.fr/hal-01304201
https://hal.archives-ouvertes.fr/hal-01304201
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 8:386-390
In this paper, we present a numerical analysis concerning ray propagation in a multimode periodic segmented waveguide with a Gaussian index segment profile. We show that this simple waveguide configuration exhibits a complex ray dynamics that can be
Publikováno v:
Optics Communications. 244:209-217
This paper reports on numerical simulations of spatial filtering efficiency using optical fibers. The filtering capability of the waveguide is evaluated by launching a non-guided optical field and measuring the power rejection along the propagation,
Autor:
Mortessagne Fabrice, Pagnoux Dominique, Legrand Olivier, Roy Philippe, Leproux Philippe, Valérie Doya
Publikováno v:
Optics Communications. 218:249-254
We present an experimental study of the influence of the inner cladding geometry on pump power absorption in double clad fibres. The experimental results are analyzed by taking into consideration the spatial intensity distribution of the modes in the
Publikováno v:
Optical Fiber Technology. 7:324-339
A complete theoretical study of double-clad fiber amplifiers is proposed. The notion of chaotic propagation is taken into account in order to improve the pumping process. In addition, a space–time algorithm is used to optimize the distribution of r