• Photonics Research
  • Vol. 10, Issue 7, 1594 (2022)
Limin Jin1、4、*, Zhuo Liu1, Yuqi Zhang1, Yunkai Wu1, Yilin Liu1, Huachun Deng1, Qinghai Song1、2、3、5、*, and Shumin Xiao1、2、3、6、*
Author Affiliations
  • 1Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology, Shenzhen 518055, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 3Pengcheng Laboratory, Shenzhen 518055, China
  • 4e-mail: jinlimin@hit.edu.cn
  • 5e-mail: qinghai.song@hit.edu.cn
  • 6e-mail: shumin.xiao@hit.edu.cn
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    DOI: 10.1364/PRJ.456381 Cite this Article Set citation alerts
    Limin Jin, Zhuo Liu, Yuqi Zhang, Yunkai Wu, Yilin Liu, Huachun Deng, Qinghai Song, Shumin Xiao. Lanthanide-doped nanocrystals in high-Q microtoroids for stable on-chip white-light lasers[J]. Photonics Research, 2022, 10(7): 1594 Copy Citation Text show less

    Abstract

    The plentiful energy states of lanthanide (Ln3+)-doped nanomaterials make them very promising for on-chip integrated white-light lasers. Despite the rapid progresses, the Ln3+-based white upconversion emissions are strongly restricted by their low upconversion quantum efficiency and the color stability. Herein, we combine the CaF2:Yb35Tm1.5Er0.5 nanocrystals and the high-Q microtoroids, and experimentally demonstrate the chip-integrated stable white-light laser. By optimizing the sizes, density, and distributions of Ln3+-doped nanocrystals, the Q factors of Ln3+-doped microtoroids are maintained as high as 5×105. The strong light matter interaction in high-Q microtoroids greatly enhances the upconversion emission and dramatically reduces the laser thresholds at 652 nm, 545 nm, and 475 nm to similarly low values (1.892.10 mJ cm-2). Consequently, robust white-light microlaser has been experimentally achieved from a single microtoroid. This research has paved a solid step toward the chip-scale integrated broadband microlasers.
    Limin Jin, Zhuo Liu, Yuqi Zhang, Yunkai Wu, Yilin Liu, Huachun Deng, Qinghai Song, Shumin Xiao. Lanthanide-doped nanocrystals in high-Q microtoroids for stable on-chip white-light lasers[J]. Photonics Research, 2022, 10(7): 1594
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