Opto-Electronic Advances
Opto-Electronic AdvancesPrevious  
2020 Vol. 3, No. 6
Cover Story:Zhang C J, Zhang C Y, Zhang Z L, He T, Mi X H et al. Self-suspended rare-earth doped up-conversion luminescent waveguide: propa-gating and directional radiation. Opto-Electron Adv 3, 190045 (2020).

Professor Hongxing Xu from Wuhan University and Prof. Hairong Zheng from Shaanxi Normal University reported a self-suspended UC-luminescent waveguide by using an RE-doped crown-shaped microparticle and investigated the UC-luminescent propagation and directional emission. The UC-luminescent pattern with controllable directional emission is observed under the excitation at 980 nm, which has a promising approach for obtaining luminescence emission with certain spatial distribution and higher brightness. Benefitting from the special morphology of the crown-like NaYF4:Yb3+/Er3+ microparticle, an air layer is formed between the waveguide and substrate, which greatly reduces the energy-coupling loss and enhances transmission efficiency. The spatial emission angle and intensity distribution are investigated in detail by applying Fourier imaging detection and numerical simulation. By analyzing the transmission and emission modes, they found that the fluorescence total reflection mode is suitable for the self-suspended UC luminescent waveguide. This work provides a new method for achieving controllable directional fluorescence emissions and obtaining improved detection efficiency by guiding the emission direction, which has potential applications in 3-dimensional displays, micro-optoelectronic devices and self-fluorescence micron lasers.
Select all:    Export Citations as: For   
Online Time:Jun 22, 2020
View: HTML | PDF | Download PDF(3084.9 KB) | ESI
Cite this article:
Zhang C J, Zhang C Y, Zhang Z L, He T, Mi X H et al. Self-suspended rare-earth doped up-conversion luminescent waveguide: propa-gating and directional radiation. Opto-Electron Adv 3, 190045 (2020). 
Online Time:Jun 22, 2020
View: HTML | PDF | Download PDF(1876.5 KB) | ESI
Cite this article:
Lee E, Sun B, Luo J Q, Singh S, Choudhury D et al. Compact pulsed thulium-doped fiber laser for topographical patterning of hydrogels. Opto-Electron Adv 3, 190039 (2020).