title: Generation of femtosecond pulses at 1350 nm by Cerenkov radiation in higher-order-mode fiber.
abstract: We demonstrate a method of generating short pulses at 1350 nm by exciting Cerenkov radiation in a higher-order-mode fiber with a 1064 nm femtosecond fiber laser. We measure a 106 fs, 0.66 nJ output pulse. Cerenkov radiation in fibers allows for energy transfer between a soliton and a dispersive wave, providing an effective and engineerable platform to shift the wavelength of a femtosecond source. With appropriate design of the higher-order-mode fiber, this method of generating short pulses at 1350 nm can be extended to other wavelengths and to higher pulse energies.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, New York 14853, USA.
authors.forename: Jennifer H
authors.initials: JH
authors.lastname: Lee
authors.forename: James
authors.initials: J
authors.lastname: van Howe
authors.forename: Chris
authors.initials: C
authors.lastname: Xu
authors.forename: Siddharth
authors.initials: S
authors.lastname: Ramachandran
authors.forename: Samir
authors.initials: S
authors.lastname: Ghalmi
authors.forename: Man F
authors.initials: MF
authors.lastname: Yan