Particularities of femtosecond spectral supercontinuum generation in anisotropic crystal media with quadratic nonlinearity

摘要

Results of supercontinuum generation experiments in case of excitation by optical pulses with central wavelength 828 nm, duration 40-50 fs, energy up to 1,0-1,5 mJ are presented. Supercontinuum radiation was detected in crystal DKDP and other crystals with x~（(2)） -nonlinearity at range from 400 nm to 1450 nm, as well as up to 2300 nm, where radiation within blue range 400-480 nm and IR-range 900-2300 nm was caused by parametric processes. Obtained radiation was analog of microstructured fibers supercontinuum radiation in the width of output spectrum.