title: Absorption and emission cross sections of Er(3+) in Al(2)O(3) waveguides.
abstract: Al(2)O(3) slab waveguide films were doped with erbium using ion implantation to a peak concentration of 1.5 at. %. Prism coupling measurements show absorption caused by (4)I (15/2) ?(4)I (13/2) intra-4f transitions in Er(3+) with a maximum at 1.530 mum of 8 dB/cm. The Er(3+) absorption cross section is determined as a function of wavelength. We used the McCumber theory to derive the emission cross section spectrum from the absorption results, which we then compared with the Er(3+) photoluminescence spectrum. The peak absorption and emission cross sections are found to be 6 x 10(-21) cm(-2). The results are used to predict the optical gain performance of an Er-doped Al(2)O(3) optical amplifier that operates around 1.5 mum.
authors.forename: G N
authors.initials: GN
authors.lastname: van den Hoven
authors.forename: J A
authors.initials: JA
authors.lastname: van der Elsken
authors.forename: A
authors.initials: A
authors.lastname: Polman
authors.forename: C
authors.initials: C
authors.lastname: van Dam
authors.forename: K W
authors.initials: KW
authors.lastname: van Uffelen
authors.forename: M K
authors.initials: MK
authors.lastname: Smit