Title :
Controlled multi-beam supercontinuum generation in fused silica by means of spatial light modulators
Author :
Perez-Vizcaino, Jorge ; Carbonell-Leal, Miguel ; Buendia, Carlos D. ; Tajahuerce, Enrique ; Borrego-Varillas, Rocio
Author_Institution :
Inst. de Nuevas Tecnol. de la Imagen (INIT), Univ. Jaume I, Castellón, Spain
Abstract :
We report on deterministic femtosecond multi-filamentation in fused silica by encoding a diffractive microlens array into a spatial light modulator. The efficiency and focal length of each microlens are electronically controlled. Even for an input inhomogeneous irradiance distribution, this allows for a precise control of the energy coupled to the filaments and the spectra of the generated supercontinuum beams. This method may be useful in different applications such as filamentation-based tumor treatment, laser processing, or spectroscopy.
Keywords :
diffractive optical elements; high-speed optical techniques; microlenses; optical arrays; silicon compounds; spatial light modulators; supercontinuum generation; SiO2; controlled multibeam supercontinuum generation; deterministic femtosecond multi-filamentation; diffractive microlens array; encoding; filamentation-based tumor treatment; focal length; fused silica; input inhomogeneous irradiance distribution; laser processing; microlens; precise energy control; spatial light modulators; spectroscopy; Arrays; Laser beams; Lenses; Microoptics; Silicon compounds; Ultrafast electronics; Ultrafast optics; femtosecond; filamentation; multi-focus; spatial light modulator;
Conference_Titel :
Information Optics (WIO), 2015 14th Workshop on
Conference_Location :
Kyoto
DOI :
10.1109/WIO.2015.7206906
