C
Crina Cojocaru
Researcher at Polytechnic University of Catalonia
Publications - 155
Citations - 1431
Crina Cojocaru is an academic researcher from Polytechnic University of Catalonia. The author has contributed to research in topics: Photonic crystal & Nonlinear optics. The author has an hindex of 20, co-authored 148 publications receiving 1284 citations. Previous affiliations of Crina Cojocaru include Autonomous University of Barcelona & Centre national de la recherche scientifique.
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Journal ArticleDOI
Observation of azimuthal modulational instability and formation of patterns of optical solitons in a quadratic nonlinear crystal.
TL;DR: This work reports what is believed to be the first experimental demonstration of the azimuthal self-breaking of intense beams containing a vortex phase dislocation into sets of optical spatial solitons in a quadratic nonlinear material.
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Ultrafast dynamics of the third-order nonlinear response in a two-dimensional InP-based photonic crystal
Fabrice Raineri,Crina Cojocaru,Paul Monnier,Ariel Levenson,Rama Raj,C. Seassal,Xavier Letartre,Pierre Viktorovitch +7 more
TL;DR: In this article, the nonlinearity produced by low pump powers via carrier induced nonlinear refractive index, leads to an efficient wavelength shift of a photonic crystal resonance observed in reflectivity.
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Flat lensing in the visible frequency range by woodpile photonic crystals
L. Maigyte,Vytautas Purlys,Jose Trull,Martynas Peckus,Crina Cojocaru,Darius Gailevičius,Mangirdas Malinauskas,Kestutis Staliunas +7 more
TL;DR: It is experimentally demonstrated that full two-dimensional focalization of light beams at visible frequencies by a three-dimensional woodpile photonic crystal is demonstrated.
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Signatures of light-beam spatial filtering in a three-dimensional photonic crystal
L. Maigyte,Titas Gertus,Martynas Peckus,Jose Trull,Crina Cojocaru,Valdas Sirutkaitis,Kestutis Staliunas +6 more
TL;DR: In this article, the authors report experimental evidence of spatial filtering of light beams by three-dimensional, low-refraction-index-contrast photonic crystals, where the refraction index has been periodically modulated using tightly focused femtosecond laser pulses.
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Ferroelectric domain engineering by focused infrared femtosecond pulses
Xin Chen,Pawel Karpinski,Pawel Karpinski,Vladlen G. Shvedov,Kaloian Koynov,Bingxia Wang,Jose Trull,Crina Cojocaru,Wieslaw Krolikowski,Wieslaw Krolikowski,Yan Sheng +10 more
TL;DR: In this article, the authors demonstrate infrared femtosecond laser-induced inversion of ferroelectric domains using tightly focused laser pulses without application of any electric field prior to, in conjunction with, or subsequent to the laser irradiation.