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Título
On-axis non-linear effects with programmable Dammann lenses under femtosecond illumination
Autor(es)
Materia
Nonlinear optics
Femtosecond lasers
Diffractive lens
Dammann lens
Clasificación UNESCO
2209.10 Láseres
Fecha de publicación
2013-05-08
Editor
Optical Society of America
Citación
Pérez Vizcaíno, J., Mendoza-Yero, O., Borrego-Varillas, R., Mínguez-Vega, G., R. Vázquez de Aldana, J., and Láncis, J. (2013). On-axis non-linear effects with programmable Dammann lenses under femtosecond illumination. Optics Letters 38 (10), 1621-1623.
Resumen
We demonstrate the utilization of Dammann lenses codified onto a spatial light modulator (SLM) for triggering nonlinear
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.
URI
ISSN
0146-9592
Colecciones
- ALF. Artículos [297]