journal article·2022

Ultralow-threshold six-photon-excited upconversion lasing in a plasmonic microcavity

Ziying Tang, Huying Zheng, Yaqi Wang, Runchen Wang, Zhiren Qiu, Yan Shen, Jie Zhou, Shichen Su, Lin Li, Hai Zhu

Nanoscale· Volume 14· Issue 20
Publisher page

Abstract

Nonlinear multiphoton absorption (MPA) upconversion lasers have critical applications in fluorescence imaging probes and biological photonics. Here, we report the realization of ultralow-threshold six-photon-excited upconversion lasing through cavity quantum electrodynamics effects in a plasmonic microcavity. The value of the Purcell factor (Fp) in hybrid whisper-gallery mode (WGM) is enhanced five-fold relative to a bare microwire (MW), which enhances the nonlinear light-matter interactions dramatically. Compared with a MW, the threshold of six-photon upconversion WGM lasing is reduced by one order magnitude due to plasmonic enhancement effects. In addition, the temperature and polarization characteristics of upconversion lasing via a plasmonic-WGM approach show a distinct evolution, different from a bare MW. This work paves the way for extreme nonlinear optics, taking advantage of the processability and high Purcell factor of plasmonic microcavities.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Plasmonic and Surface Plasmon Research · Photonic and Optical Devices · Strong Light-Matter Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China

State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China

X LAB, The Second Academy of CASIC, Beijing, 100854, China

Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou, 510631, China

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics & Electronic Engineering, Harbin Normal University, Harbin, 150025, China

Funding

Guangzhou Science and Technology Plan · National Natural Science Foundation of China

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