title: NaYF4 nanocrystals with intense 1530 nm fluorescence for polymer optical waveguide amplifiers.
abstract: Alfa-NaYF4:18%Yb,0.2%Er nanocrystals have been synthesized. The average size of nanocrystals is 15 nm. The fluorescence spectra of the nanocrystals excited under 980 nm LD was recorded. An optical waveguide amplifier was fabricated using SU-8 2005 polymer doped with 0.21 wt% of nanocrytals. For an input signal power of 0.05 mW and a pump power of 212 mW, a relative optical gain of 3.3 dB at 1520 nm was achieved.
authors.forename: Xinyang
authors.initials: X
authors.lastname: Liu
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: Xuesong
authors.initials: X
authors.lastname: Zhai
authors.forename: Guanshi
authors.initials: G
authors.lastname: Qin
authors.forename: Weiping
authors.initials: W
authors.lastname: Qin
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Daming
authors.initials: D
authors.lastname: Zhang