Intense vector supercontinuum radiation from femtosecond filamentation

• DOI: 10.1364/oe.457333
• Publication Date: 2022-04-28T17:30:17Z
• Authors: Dongwei Li; Junwei Chang; Deming Li; Longfei Ji; Wei Liang; Litong Xu; Lanzhi Zhang; Tingting Xi; Zuoqiang Hao
• Keywords: Supercontinuum; Filamentation

Intense vector supercontinuum (SC) radiation with spatial polarization is obtained by using 800nm femtosecond laser beams in the air. The SC generated azimuthally, radially, cylindrically polarized beams, and higher-order are investigated, respectively. results show that greatly enhanced compared to a Gaussian beam. energy density of reaches order 1µJ/nm bandwidth 258 nm from 559 817 0.1 µJ/nm 500 nm. Furthermore, checking distribution different wavelengths visible near-infrared bands, we find maintains nearly same as pump pulses. This work provides an effective convenient way generate powerful which may facilitate potential applications including optical communication, micro/nano-fabrication, super-resolution microscopy.