Extremely lower lasing threshold in Er3+/Yb3+ co-doped phosphate dual glass microspheres

Erbium-doped glass microsphere laser systems hold significant promise in the applications of bio-medicine and optical fiber sensing. However, their development has been hindered by the relatively high laser pump threshold. In this study, we proposed a unique dual microsphere system where two microsp...

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Veröffentlicht in:Applied physics letters 2024-08, Vol.125 (9)
Hauptverfasser: Huang, Qing, Bai, Shengchuang, Zhuo, Haonan, Yu, Zhouyi, Gao, Yixiao, Dai, Shixun, Nie, Qiuhua, Yousef, El Sayed, Wang, Xunsi, Wang, Rongping
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container_issue 9
container_start_page
container_title Applied physics letters
container_volume 125
creator Huang, Qing
Bai, Shengchuang
Zhuo, Haonan
Yu, Zhouyi
Gao, Yixiao
Dai, Shixun
Nie, Qiuhua
Yousef, El Sayed
Wang, Xunsi
Wang, Rongping
description Erbium-doped glass microsphere laser systems hold significant promise in the applications of bio-medicine and optical fiber sensing. However, their development has been hindered by the relatively high laser pump threshold. In this study, we proposed a unique dual microsphere system where two microspheres are affixed to a single-mode fiber taper and achieved a remarkably low lasing threshold of 19 μW for single-mode laser emission at 1544 nm. This is in sharp contrast with the lasing threshold of 56 μW observed in single microspheres. Our findings represent a significant achievement in the development of low-threshold, compact infrared laser sources for emerging applications in photonics.
doi_str_mv 10.1063/5.0216612
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subjects Erbium
Infrared lasers
Lasing
Microspheres
Optical fibers
Ytterbium
title Extremely lower lasing threshold in Er3+/Yb3+ co-doped phosphate dual glass microspheres
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