title: Infrared photosensitivity in silica glasses exposed to femtosecond laser pulses.
abstract: We investigate the use of infrared femtosecond laser pulses to induce highly localized refractive-index changes in fused-silica glasses. We characterize the magnitude of the change as a function of exposure and measure index changes as large as 3x10(-3) and 5x10(-3) in pure fused silica and boron-doped silica, respectively. The potential of this technique for writing three-dimensional photonic structures in bulk glasses is demonstrated by the fabrication of a Y coupler within a sample of pure fused silica.
authors: D
authors: D
authors: Homoelle
authors: S
authors: S
authors: Wielandy
authors: A L
authors: AL
authors: Gaeta
authors: N F
authors: NF
authors: Borrelli
authors: C
authors: C
authors: Smith