On-axis non-linear effects with programmable Dammann lenses under femtosecond illumination
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Other documents of the author: Pérez Vizcaíno, Jorge; Mendoza-Yero, Omel; Borrego Varillas, Rocío; Mínguez-Vega, Gladys; Vázquez de Aldana, Javier R.; Lancis, Jesús
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comunitat-uji-handle2:10234/43662
comunitat-uji-handle3:10234/43643
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Title
On-axis non-linear effects with programmable Dammann lenses under femtosecond illuminationAuthor (s)
Date
2013Publisher
Optical Society of AmericaISSN
1539-4794; 0146-9592Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
We demonstrate the utilization of Dammann lenses codified onto a spatial light modulator (SLM) for triggering non-linear effects. With continuous wave illumination Dammann lenses are binary phase optical elements that ... [+]
We demonstrate the utilization of Dammann lenses codified onto a spatial light modulator (SLM) for triggering non-linear effects. With continuous wave illumination Dammann lenses are binary phase optical elements that generate a set of equal intensity foci. We theoretically calculate the influence of ultrashort pulse illumination on the uniformity of the generated pattern, which is affected by chromatic aberration for pulses with temporal widths lower than 100 fs. The simulations also indicate that acceptable uniformity can be achieved for pulses of several fs by shortening the distance among foci which can be easily modified with the SLM. Multifocal second-harmonic generation (SHG) and on-axis multiple filamentation are produced and actively controlled in β−BaB2O4 (BBO) and fused silica samples, respectively, with an amplified Ti: Sapphire femtosecond laser of 30 fs pulse duration. Experimental results are in very good agreement with theoretical calculations. [-]
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Optics letters, 2013, Vol. 38, No. 10Rights
© 2013 Optical Society of America. "This paper was published in OPTICS LETTERS and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/fulltext.cfm?uri=ol-38-10-1621&id=253312. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law".
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