@inproceedings{e6518662880943c7a5815c5c0dc5a9c8,
title = "Guided-mode resonance enhanced near-infrared-to-visible upconversion fluorescence in a resonant waveguide grating",
abstract = "Guided mode resonance (GMR) enhanced near-infrared (near-IR)-to-visible upconversion fluorescence (UCF) from a rare-earth doped polymer resonant waveguide grating (RWG), comprised of a NaYF4:Yb/Tm nanocrystals doped poly-methyl-methacrylate (NaYF4:Yb/Tm-PMMA) thin layer on top of a textured SU8 substrate with a thin intervening layer of TiO2. Strong UCF is observed by matching either incoming near-IR excitation or out-going UCF extraction to the GMR wavelengths of the rare-earth doped polymer RWG. The intensity of the UCF can be enhanced up to 104 times in visible range and 103 times in near-IR range compared with that from a flat area. According to the rigorous coupled-wave analysis calculations, high enhancement of UCF is attributed to the strong local field generated at the TiO2 waveguide layer due to the resonance between the near-IR excitation light and the GMR. The extraction of the UPF is further promoted when the wavelengths of the UPF resonate with the GMRs.",
author = "Liou, {Hao Yu} and Lin, {Jian Hung} and Wang, {Zhen Dao} and Tseng, {Chun Yen} and Lee, {Ching Ting} and Ting, {Chu Chi} and Kan, {Hung Chih} and Hsu, {Chia Chen}",
year = "2014",
language = "English",
series = "Progress in Electromagnetics Research Symposium",
publisher = "Electromagnetics Academy",
pages = "897--901",
booktitle = "Progress in Electromagnetics Research Symposium",
address = "United States",
note = "Progress in Electromagnetics Research Symposium, PIERS 2014 ; Conference date: 25-08-2014 Through 28-08-2014",
}