Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Gérard Aka"'
Autor:
Lucian Gheorghe, Alin Broasca, Madalin Greculeasa, Flavius Voicu, George Stanciu, Stefania Hau, Gabriela Croitoru, Catalina Alice Brandus, Cristina Gheorghe, Federico Khaled, Pascal Loiseau, Gérard Aka
Publikováno v:
Optical Materials: X, Vol 7, Iss , Pp 100052- (2020)
Bifunctional crystals, in which the laser effect and a nonlinear optical (NLO) process, e.g. frequency doubling, can occur simultaneously, play a key role in the development of new laser sources with emission in the near-infrared (NIR) or visible (VI
Externí odkaz:
https://doaj.org/article/d4fef7e043cd4451b357009427560dbc
Publikováno v:
Optical Materials. 133:112899
Autor:
S. Hau, George A. Stanciu, Cristina Gheorghe, Gabriela Croitoru, Alin Broasca, Flavius Voicu, Federico Khaled, Madalin Greculeasa, Pascal Loiseau, Gérard Aka, Lucian Gheorghe, Catalina Alice Brandus
Publikováno v:
Optical Materials: X, Vol 7, Iss, Pp 100052-(2020)
Bifunctional crystals, in which the laser effect and a nonlinear optical (NLO) process, e.g. frequency doubling, can occur simultaneously, play a key role in the development of new laser sources with emission in the near-infrared (NIR) or visible (VI
Autor:
Florent, Cassouret, Arvydas, Kausas, Vincent, Yahia, Gérard, Aka, Pascal, Loiseau, Takunori, Taira
Publikováno v:
Optics express. 28(7)
In this work, the performance of Ca
Autor:
Gérard Aka, Sergei A. Klimin, Pascal Loiseau, Suchinda Sattayaporn, B. N. Mavrin, Kirill N. Boldyrev
Publikováno v:
Journal of Luminescence
Journal of Luminescence, Elsevier, 2020, 219, pp.116895-. ⟨10.1016/j.jlumin.2019.116895⟩
Journal of Luminescence, Elsevier, 2020, 219, pp.116895-. ⟨10.1016/j.jlumin.2019.116895⟩
Single crystals of Pr3+ doped hexa-aluminate Sr0.7La0.3Mg0.3Al12O19 (ASL) were prepared for spectroscopic characterization. We investigated their optical spectroscopic properties in σ and π polarization of light. Absorption spectra were recorded in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b81dce08b7bd112ab39bf3b761d96c
https://hal.archives-ouvertes.fr/hal-03488461/file/S0022231319318319.pdf
https://hal.archives-ouvertes.fr/hal-03488461/file/S0022231319318319.pdf
Publikováno v:
Journal of Luminescence. 199:509-515
Optical spectroscopic properties of Dy3+ ions in Dy:CaYAlO4 single crystals were investigated, aiming at evaluating the potential for visible laser applications. The crystals were grown by the Czochralski technique in reducing atmosphere in order to
Publikováno v:
Journal of Alloys and Compounds. 740:1133-1139
Optical spectroscopic characterization of Ba3Tb(PO4)3 single crystals grown by the Czochralski technique was performed in order to evaluate the potential for visible laser application. Powder X-ray diffraction patterns at different temperatures were
Publikováno v:
Journal of Alloys and Compounds. 711:446-454
0.4% Nd3+-doped Y2O3 transparent ceramics have been investigated from their optical absorption and emission properties to the laser performances at two different wavelengths, 0.946 μm and 1.074 μm. Absorption spectra in the range 300–1000 nm was
Autor:
Gabriela Croitoru, S. Hau, Lucian Gheorghe, Gérard Aka, Federico Khaled, A. Achim, Pascal Loiseau, Flavius Voicu, N. Pavel, Cristina Gheorghe
Publikováno v:
Journal of Alloys and Compounds. 688:510-517
Czochralski growth along with linear optical characterizations and near-infrared laser performances of ytterbium doped lanthanum and gadolinium scandium borate crystals (La x Gd Y Sc Z Yb w (BO 3 ) 4 with x + y + z + w = 4) with acentric huntite-type
Publikováno v:
Crystal Growth & Design. 16:3473-3479
Incongruent melting nonlinear optical (NLO) crystals of LaxGdyScz(BO3)4 (x + y + z = 4) - LGSB have been grown by the Czochralski method, for the first time to our knowledge. The crystal growth conditions are discussed, and the melt composition and g