title: Enhancement of the short wavelength upconversion emission in inverse opal photonic crystals.
abstract: Upconversion luminescence properties of Yb-Tb codoped Bi4Ti3O12 inverse opals have been investigated. The results show that the upconversion emission can be modulated by the photonic band gap. More significantly, in the upconversion inverse opals, the excited-state absorption of Tb3+ is greatly enhanced by the suppression of upconversion spontaneous emissions of the intermediate excited state, and thus the short wavelength upconversion emission from Tb3+ is considerably improved. We believe that the present work will be valuable for not only the foundational study of upconversion emission modifications but also new optical devices in upconversion displays and short wavelength upconversion lasers.
authors.forename: Hangjun
authors.initials: H
authors.lastname: Wu
authors.forename: Jialun
authors.initials: J
authors.lastname: Zhu
authors.forename: Zhengwen
authors.initials: Z
authors.lastname: Yang
authors.forename: Dong
authors.initials: D
authors.lastname: Yan
authors.forename: Rongfei
authors.initials: R
authors.lastname: Wang
authors.forename: Jianbei
authors.initials: J
authors.lastname: Qiu
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Song
authors.forename: Xue
authors.initials: X
authors.lastname: Yu
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Dacheng
authors.initials: D
authors.lastname: Zhou
authors.forename: Zhaoyi
authors.initials: Z
authors.lastname: Yin