title: Molecular alignment induced ultraviolet femtosecond pulse modulation.
abstract: Ultrashort ultraviolet pulses at 267 nm were generated through four-wave mixing processes in dual-color femtosecond filaments. The generated ultrashort ultraviolet pulses experienced intensity modulation due to molecular-alignment-induced spatial (de)focusing effects, and the output beam profiles were shown to vary observably at different molecular alignment revivals, facilitating all-optical field-free and ultrafast spatial shaping and profile optimization of the ultraviolet pulses.
authors: Min
authors: M
authors: Li
authors: Wenxue
authors: W
authors: Li
authors: Heping
authors: H
authors: Zeng