A5060823773- Semiconductor Lasers and Optical Devices
- Solid State Laser Technologies
- Photonic and Optical Devices
- Luminescence Properties of Advanced Materials
- Organic Light-Emitting Diodes Research
- Glass properties and applications
- Photochemistry and Electron Transfer Studies
Xiamen University
2021-2024
The relative optical gains at three near infrared wavelengths (1550 nm, 1064 and 980 nm) were achieved in NaYF4: Er3+, Yb3+ nanoparticle-doped SU-8 waveguides when using two low-cost light-emitting diodes (LEDs) instead of traditional nm semiconductor laser as pump source. polymer fabricated by one-step photolithography process. fluorescence bands around 1550 1000 due to the 4I13/2 → 4I15/2 transition Er3+ ions 2F5/2 2F7/2 observed under excitation 405 520 LEDs. By vertical top pumping mode...
Abstract Relying on a reverse energy transfer mechanism between erbium (Er 3+ ) and ytterbium (Yb ions, optical gains at wavelengths of 1550, 980, 1067 nm are achieved in NaYF 4 : Er , Yb nanoparticles‐doped polymer waveguides under excitation low‐power light‐emitting diodes (LEDs) instead 976 or 1480 semiconductor laser as pump sources. The demonstrated five waveguide structures: active‐rectangular, evanescent‐field with without an aluminium (Al) reflector, dual‐active hybrid Al reflector....
Abstract Optical gains at 637 nm wavelength using light‐emitting diodes (LEDs) instead of traditional semiconductor lasers as pumping sources are demonstrated in the organic molecule 2,6‐bis[4‐(diphenylamino)phenyl]‐9,10‐anthracenedione (AQ(PhDPA) 2 )‐doped polymethylmethacrylate (PMMA) and SU‐8 polymer waveguides. Under excitation four blue‐violet LEDs with different central wavelengths, fluorescence red band is observed owing to transition AQ(PhDPA) from excited states ground state based...
A 980 nm semiconductor laser is always selected as the pump source for erbium-ytterbium co-doped optical waveguide amplifiers. In this work, two low-cost blue-violet LEDs, rather than an expensive laser, were used to Er 3+ -Yb phosphate planar waveguide. When signal power was 0.4 mW at a 1550 wavelength, internal gains of about 4.1 and 4.5 dB/cm respectively obtained under excitations 32 mW/cm 2 , 275 LED 914 405 LED. It found that 51.17% total ions in H 9/2 state contributed luminescence...
This cover image shows optical amplification at 637 nm that is achieved in polymer waveguides doped with thermally activated delayed fluorescence (TADF) molecules. Under excitation of low-cost light-emitting diodes, the molecules realize process converting blue-violet light into red light, which depends on continuous absorption band material and reverse intersystem crossing process. The results, presented by Dan Zhang, Guohua Xie, co-workers article number 2200205, open new avenues for...