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

被引：4

作者：

Tang, Ziying ^{[1
]}

Zheng, Huying ^{[1
]}

Wang, Yaqi ^{[1
]}

Wang, Runchen ^{[1
]}

Qiu, Zhiren ^{[1
]}

Shen, Yan ^{[2
]}

Zhou, Jie ^{[3
]}

Su, Shichen ^{[4
]}

Li, Lin ^{[5
]}

Zhu, Hai ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[2] Sun Yat Sen Univ, Sch Elect & Informat Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[3] Second Acad CASIC, X LAB, Beijing 100854, Peoples R China

[4] South China Normal Univ, Inst Optoelect Mat & Technol, Guangzhou 510631, Peoples R China

[5] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

来源：

NANOSCALE | 2022年 / 14卷 / 20期

基金：

中国国家自然科学基金;

关键词：

STIMULATED-EMISSION; 2-PHOTON ABSORPTION; GENERATION; MOLECULES;

D O I：

10.1039/d2nr01554d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 (F-p) 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.

引用

页码：7589 / 7595

页数：7