title: Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition.
abstract: We report very large photoinduced refractive-index changes Dn, of the order of ~10(2), in lead germanate glass waveguides grown by pulsed-laser deposition. The magnitude of Dn was derived from measurements of diffraction efficiency for gratings written by exposure to 244-nm light through a phase mask, whereas the sign of Dn was determined from ellipsometric data. Results are shown for films grown under oxygen pressures ranging from 1 chi 10(-2) to 6 chi 10(-2)mbars (1.33mbars=1 Torr).
authors: S
authors: S
authors: Mailis
authors: A A
authors: AA
authors: Anderson
authors: S J
authors: SJ
authors: Barrington
authors: W S
authors: WS
authors: Brocklesby
authors: R
authors: R
authors: Greef
authors: H N
authors: HN
authors: Rutt
authors: R W
authors: RW
authors: Eason
authors: N A
authors: NA
authors: Vainos
authors: C
authors: C
authors: Grivas