title: Wavelength scaling of optimal hollow-core fiber compressors in the single-cycle limit.
abstract: We systematically investigate supercontinuum generation using three-dimensional numerical simulations of nonlinear femtosecond pulse propagation in hollow-core fibers (HCF) at different pump wavelengths ranging from 400 nm to 2 μm. A general design strategy for HCF compressors is presented, maximizing the spectral broadening while preserving high beam quality for given pump pulse energy, duration and wavelength. We show close fitting of the modeled results with simple analytical formulas, enabling the construction of high-energy pulse compressors at the wavelength range of interest. Based on the presented wavelength scaling study, we propose an orthogonally polarized two-color pumping scheme in a single HCF compressor for the coherent synthesis of the electric fields in the sub-cycle regime with mJ level energies.
authors.affiliation: Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA. granados@mit.edu
authors.forename: Eduardo
authors.initials: E
authors.lastname: Granados
authors.forename: Li-Jin
authors.initials: LJ
authors.lastname: Chen
authors.forename: Chien-Jen
authors.initials: CJ
authors.lastname: Lai
authors.forename: Kyung-Han
authors.initials: KH
authors.lastname: Hong
authors.forename: Franz X
authors.initials: FX
authors.lastname: Kärtner