Title :
Controlled Multibeam Supercontinuum Generation With a Spatial Light Modulator
Author :
Borrego-Varillas, Rocio ; Perez-Vizcaino, Jorge ; Mendoza-Yero, Omel ; Minguez-Vega, Gladys ; de Aldana, Javier R. Vazquez ; Lancis, J.
Author_Institution :
Dept. de Cienc. Experimentals, Univ. Jaume I, Castello, Spain
Abstract :
We report on deterministic femtosecond multifilamentation in fused silica by encoding a diffractive microlens array into a spatial light modulator. The efficiency and focal length of each microlens are modified through the addressing voltage. This allows for a precise control on the energy coupled to the filaments thus obtaining a homogenized supercontinuum pattern from an inhomogeneous irradiance input distribution. Slight changes in the focal length of the microlenses allow for independent tailoring of the supercontinuum spectra.
Keywords :
high-speed optical techniques; laser beams; microlenses; optical arrays; optical control; silicon compounds; spatial light modulators; supercontinuum generation; SiO2; controlled multibeam supercontinuum generation; deterministic femtosecond multifilamentation; diffractive microlens array encoding; focal length; fused silica; homogenized supercontinuum pattern; inhomogeneous irradiance input distribution; spatial light modulator; Arrays; Laser beams; Laser theory; Lenses; Microoptics; Silicon compounds; Ultrafast optics; Optical pulse shaping; optical arrays; supercontinuum generation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2330362
