Guided-mode Resonance Enhanced Near-infrared-to-visible Upconversion Fluorescence in a Resonant Waveguide Grating
Guided mode resonance(GMR)enhanced near-infrared(near-IR)-to-visible upcon-version 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 ex-traction 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.
Hao Yu Liou Jian Hung Lin Zhen-Dao Wang Chun-Yen Tseng Ching-Ting Lee Chu-Chi Ting Hung-Chih Kan Chia Chen Hsu
Department of Physics,National Chung Cheng University Ming Hsiung,Chia Yi 621,Taiwan Graduate Institute of Opto-Mechatronics,National Chung Cheng University Ming Hsiung,Chia Yi 621,Taiw Institute of Microelectronics,Department of Electrical Engineering National Cheng Kung University,Ta Department of Physics,National Chung Cheng University Ming Hsiung,Chia Yi 621,Taiwan;Graduate Instit
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
897-901
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）