Chinese Optics Letters, 2017, 15 (1): 011601, Published Online: Jul. 26, 2018
Pure red visible emission via three-photon excitation of colloidal Na3ZrF7:Er nanoparticles using a telecom-band laser
Abstract
We provide the first demonstration of pure red emission in the visible light region via three-photon excitation in monodisperse Na 3 ZrF 7 : Er nanoparticles (NPs) by using a laser operating in the telecommunication band. NPs of ~ 22 nm in diameter are synthesized at 260°C by the thermal decomposition method. The experimental results reveal that the Na 3 ZrF 7 : Er NPs exhibit pure red emission in the visible region under 1480 nm laser excitation, and the emission intensity is significantly influenced by the Er 3 + ion concentration. The decay times of the S 3 / 2 4 → F 4 15 / 2 and F 9 / 2 4 → F 4 15 / 2 transitions of the Er 3 + ions at 540 and 655 nm, respectively, are reduced by increasing the Er 3 + ion concentration in the
Shuai Ye, Guangsheng Wang, Maozhen Xiong, Jun Song, Junle Qu, Weixin Xie. Pure red visible emission via three-photon excitation of colloidal Na3ZrF7:Er nanoparticles using a telecom-band laser[J]. Chinese Optics Letters, 2017, 15(1): 011601.