title: Generation of radially polarized terahertz pulses via velocity-mismatched optical rectification.
abstract: We demonstrate the generation of radially polarized terahertz pulses via optical rectification in a Cherenkov geometry exploiting velocity mismatch, contrary to the traditional approach for generating linearly polarized terahertz beams. A compact system is implemented using 001-cut ZnTe pumped by an ultrafast Yb-doped fiber amplifier.
authors.affiliation: FOCUS Center and Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, MI 48109-2099, USA. gouqingc@engin.umich.edu
authors.forename: Guoqing
authors.initials: G
authors.lastname: Chang
authors.forename: Charles J
authors.initials: CJ
authors.lastname: Divin
authors.forename: Chi-Hung
authors.initials: CH
authors.lastname: Liu
authors.forename: Steven L
authors.initials: SL
authors.lastname: Williamson
authors.forename: Almantas
authors.initials: A
authors.lastname: Galvanauskas
authors.forename: Theodore B
authors.initials: TB
authors.lastname: Norris