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

Author Affiliations
1 Key Lab of Optoelectronic Devices and Systems of Ministry of Education/Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2 College of Information Engineering, Shenzhen University, Shenzhen 518060, China
Abstract
We provide the first demonstration of pure red emission in the visible light region via three-photon excitation in monodisperse Na3ZrF7: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 Na3ZrF7:Er NPs exhibit pure red emission in the visible region under 1480 nm laser excitation, and the emission intensity is significantly influenced by the Er3+ ion concentration. The decay times of the S3/24F415/2 and F9/24F415/2 transitions of the Er3+ ions at 540 and 655 nm, respectively, are reduced by increasing the Er3+ 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.

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