title: Nonlinear liquid-crystal fiber structures for passive optical limiting of short laser pulses.
abstract: Optical limiting of nanosecond and picosecond laser pulses through millimeter-length isotropic liquid-crystalcored fiber structures is reported. Low limiting threshold and clamped transmitted outputs are observed. The underlying nonlinear mechanisms are nonlinear photoabsorptions and scattering and lossy waveguiding caused by laser-induced thermal-density index fluctuations.
authors.forename: I C
authors.initials: IC
authors.lastname: Khoo
authors.forename: M V
authors.initials: MV
authors.lastname: Wood
authors.forename: M
authors.initials: M
authors.lastname: Lee
authors.forename: B D
authors.initials: BD
authors.lastname: Guenther