title: Photoscattering effect in supercontinuum-generating photonic crystal fiber.
abstract: A photosensitivity different from that responsible for fiber grating inscription is found in a supercontinuum-generating photonic crystal fiber transmitting intense 818 nm femtosecond pulses. This photosensitivity progressively generates a waveguide at the entrance of the fiber to scatter light of specific wavelengths and is termed as the photoscattering effect. This effect is linked to the ~800 nm photosensitivity in the microlithography of bulk silica glass. While the effect somewhat limits fiber-optic supercontinuum applications, it can be beneficial to produce new photonic devices.
authors.affiliation: Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors.forename: H
authors.initials: H
authors.lastname: Tu
authors.forename: D L
authors.initials: DL
authors.lastname: Marks
authors.forename: Z
authors.initials: Z
authors.lastname: Jiang
authors.forename: S A
authors.initials: SA
authors.lastname: Boppart