Zobrazeno 1 - 10
of 233
pro vyhledávání: '"Beresna Martynas"'
Autor:
Shayeganrad Gholamreza, Beresna Martynas, Bucio Thalia Domínguez, Brambilla Gilberto, Gardes Fredric Y.
Publikováno v:
EPJ Web of Conferences, Vol 307, p 02021 (2024)
We demonstrate the feasibility of femtosecond laser pulses to tune refractive index of SiNx, enabling direct writing waveguides in SiNx and reconfiguring microring resonators. The refractive index increases with pulse energy and pulse density.
Externí odkaz:
https://doaj.org/article/5261cd3663fd4bc7a440321d16e87e77
Publikováno v:
EPJ Web of Conferences, Vol 307, p 02050 (2024)
Externí odkaz:
https://doaj.org/article/d3049a83c2a547dba48782d3eb8386c5
techniques can be considered as an attractive alternative to the often-cumbersome traditional manufacturing routes. With the use of high-power lasers, localized hot zones that are necessary for glass making can be obtained rapidly. For instance, Lase
Externí odkaz:
http://arxiv.org/abs/2407.04598
Autor:
Shayeganrad, Gholamreza1 g.shayeganrad@soton.ac.uk, Beresna, Martynas1, Bucio, Thalia Domínguez1, Brambilla, Gilberto1, Gardes, Fredric Y.1
Publikováno v:
EPJ Web of Conferences. 10/19/2024, Vol. 307, p1-3. 3p.
Publikováno v:
MATEC Web of Conferences, Vol 8, p 04008 (2013)
Under certain conditions, femtosecond lasers can be used to introduce self-organized nanogratings in the bulk of fused silica. Here, we report that the nanogratings orientation influences the induced stress distribution around laser affected zones.
Externí odkaz:
https://doaj.org/article/2e2f6c4c599b4f0c86770205c0946eef
Publikováno v:
MATEC Web of Conferences, Vol 8, p 02008 (2013)
Thermal poling assisted homogenization of polydisperse Ag nanoparticles embedded in the soda-lime glass is demonstrated. The homogenization leads to the narrowing of the localized surface plasmon resonance. The subsequent irradiation with linearly po
Externí odkaz:
https://doaj.org/article/66affbd1d1894414b7bc782a3b0299c6
Publikováno v:
MATEC Web of Conferences, Vol 8, p 04006 (2013)
Cylindrically polarized beams produced by femtosecond laser written S-waveplate are used to modify amorphous silicon films. Paradoxically, no crystallization is observed in the maximum of longitudinal electric field despite the strongest light intens
Externí odkaz:
https://doaj.org/article/e60610f1893c43a7881bb943f71d1db5
Autor:
Sun, Qi, Williamson, James, Vettenburg, Tom, Phillips, David B., Martin, Haydn, Brambilla, Gilberto, Jiang, Xiangqian, Beresna, Martynas
Publikováno v:
In Optics and Lasers in Engineering October 2023 169
Akademický článek
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Autor:
Emelyanov, Andrey V., Kazanskii, Andrey G., Khenkin, Mark V., Forsh, Pavel A., Kashkarov, Pavel K., Gecevicius, Mindaugas, Beresna, Martynas, Kazansky, Peter G.
Visible luminescence is observed from the composite of SiO2 with embedded silicon nanocrystallites produced by femtosecond laser irradiation of hydrogenated amorphous silicon (a-Si:H) film in air. The photoluminescence originates from the defect stat
Externí odkaz:
http://arxiv.org/abs/1206.6025