Two-photon pumped spaser based on the CdS/ZnS core/shell quantum dot–mesoporous silica–metal structure

Zi-Jun Zhan; Li Ma; Jian-Fei Li; Yu-Qin Zhang; Chun-Xiang Liu; Rui-Rui Zhang; Xiang-Yu Zeng; Chuan-Fu Cheng; Chen Cheng

doi:10.1063/1.5143928

AIP Advances (Apr 2020)

Two-photon pumped spaser based on the CdS/ZnS core/shell quantum dot–mesoporous silica–metal structure

Zi-Jun Zhan,
Li Ma,
Jian-Fei Li,
Yu-Qin Zhang,
Chun-Xiang Liu,
Rui-Rui Zhang,
Xiang-Yu Zeng,
Chuan-Fu Cheng,
Chen Cheng

Affiliations

Zi-Jun Zhan: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Li Ma: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Jian-Fei Li: School of Electronic and Information Engineering (Department of Physics), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, People’s Republic of China
Yu-Qin Zhang: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Chun-Xiang Liu: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Rui-Rui Zhang: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Xiang-Yu Zeng: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Chuan-Fu Cheng: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China
Chen Cheng: School of Physics and Electronics, Shandong Provincial Key Laboratory of Optics and Photonic Devices, Shandong Normal University, Jinan 250014, People’s Republic of China

DOI: https://doi.org/10.1063/1.5143928
Journal volume & issue: Vol. 10, no. 4
pp. 045312 – 045312-6

Abstract

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The spaser (a plasmonic nanolaser) has rapidly advanced as a subwavelength light source candidate. Herein, we introduce a spaser based on a quantum-dot, mesoporous-oxide, and metal structure from top to bottom consisting of CdS/ZnS core/shell quantum dots, a mesoporous silica film (MSF), and an Au film, respectively. Two-photon pumping using femtosecond laser pulses at 800 nm creates amplified spontaneous emission at approximately 451 nm. The advantages of MSF as a dielectric gap layer are examined through numerical simulations. Measuring the dependence of the luminescence intensity on the average pump power confirms the occurrence of two-photon up-conversion luminescence.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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