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Room-Temperature Single-Mode Plasmonic Perovskite Nanolasers with Sub-Picosecond Pulses

Li, Guohui ; Tao, Jianxun ; Hou, Zhen ; Zhao, Kefan ; Zhao, Ruofan ; Ji, Ting ; Zhang, Qing ; Xiong, Qihua ; Zheng, Kaibo LU and Pullerits, Tonu LU , et al. (2024) In Advanced Functional Materials
Abstract

With the explosive growth of communication traffic, increasing the modulation bandwidth of semiconductor lasers has attracted significant attention. However, after rapid progress is achieved, further increasing the modulation bandwidth of semiconductor lasers is hampered by the slow charge-carrier dynamics. Here, a room temperature, single-mode perovskite nanolaser with sub-picosecond pulses, enabled by high Purcell enhancement is reported. This enhancement is achieved via transferring an atomically smooth perovskite nanoplatelet onto the surface of an ultra-smooth SiO2/Ag film. This nanolaser features a low mode volume (V) as low as 0.137 µm3, a high-quality factor (Q) up to 2180, and a low lasing threshold of... (More)

With the explosive growth of communication traffic, increasing the modulation bandwidth of semiconductor lasers has attracted significant attention. However, after rapid progress is achieved, further increasing the modulation bandwidth of semiconductor lasers is hampered by the slow charge-carrier dynamics. Here, a room temperature, single-mode perovskite nanolaser with sub-picosecond pulses, enabled by high Purcell enhancement is reported. This enhancement is achieved via transferring an atomically smooth perovskite nanoplatelet onto the surface of an ultra-smooth SiO2/Ag film. This nanolaser features a low mode volume (V) as low as 0.137 µm3, a high-quality factor (Q) up to 2180, and a low lasing threshold of 36.65 µJ cm−2. The Q value of the laser is one order of magnitude higher than that of state-of-the-art nanolasers. The smoothness of both the nanoplatelet and the SiO2/Ag film in the laser is critical to achieving a high Purcell enhancement. Polarization analysis reveals that the laser emission consists of a transvere-magnetic (TM) polarized surface plasmon mode and a transverse-electric (TE) polarized photonic mode. Furthermore, ultrafast charge-carrier dynamics indicate the surface plasmon decay time can be as short as 0.6 ± 0.4 ps due to the high Purcell enhancement. This work opens up the possibility of developing nanolasers with high bandwidths and ultra-small sizes.

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organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
laser, perovskite, plasmonic, sub-picosecond
in
Advanced Functional Materials
publisher
Wiley-Blackwell
external identifiers
  • scopus:85195279157
ISSN
1616-301X
DOI
10.1002/adfm.202405559
language
English
LU publication?
yes
id
2f66ca24-8a0c-4754-bbd9-250a5138814c
date added to LUP
2024-09-12 13:23:10
date last changed
2024-09-12 13:23:22
@article{2f66ca24-8a0c-4754-bbd9-250a5138814c,
  abstract     = {{<p>With the explosive growth of communication traffic, increasing the modulation bandwidth of semiconductor lasers has attracted significant attention. However, after rapid progress is achieved, further increasing the modulation bandwidth of semiconductor lasers is hampered by the slow charge-carrier dynamics. Here, a room temperature, single-mode perovskite nanolaser with sub-picosecond pulses, enabled by high Purcell enhancement is reported. This enhancement is achieved via transferring an atomically smooth perovskite nanoplatelet onto the surface of an ultra-smooth SiO<sub>2</sub>/Ag film. This nanolaser features a low mode volume (V) as low as 0.137 µm<sup>3</sup>, a high-quality factor (Q) up to 2180, and a low lasing threshold of 36.65 µJ cm<sup>−2</sup>. The Q value of the laser is one order of magnitude higher than that of state-of-the-art nanolasers. The smoothness of both the nanoplatelet and the SiO<sub>2</sub>/Ag film in the laser is critical to achieving a high Purcell enhancement. Polarization analysis reveals that the laser emission consists of a transvere-magnetic (TM) polarized surface plasmon mode and a transverse-electric (TE) polarized photonic mode. Furthermore, ultrafast charge-carrier dynamics indicate the surface plasmon decay time can be as short as 0.6 ± 0.4 ps due to the high Purcell enhancement. This work opens up the possibility of developing nanolasers with high bandwidths and ultra-small sizes.</p>}},
  author       = {{Li, Guohui and Tao, Jianxun and Hou, Zhen and Zhao, Kefan and Zhao, Ruofan and Ji, Ting and Zhang, Qing and Xiong, Qihua and Zheng, Kaibo and Pullerits, Tonu and Cui, Yanxia}},
  issn         = {{1616-301X}},
  keywords     = {{laser; perovskite; plasmonic; sub-picosecond}},
  language     = {{eng}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Advanced Functional Materials}},
  title        = {{Room-Temperature Single-Mode Plasmonic Perovskite Nanolasers with Sub-Picosecond Pulses}},
  url          = {{http://dx.doi.org/10.1002/adfm.202405559}},
  doi          = {{10.1002/adfm.202405559}},
  year         = {{2024}},
}