High-energy low-repetition broadband ultrafast lasers empowered by hollow-core fiber
Abstract
Low-repetition-rate ultrafast lasers with high peak power and broadband spectrum are critical for applications such as industrial processing, lidar, imaging and spectroscopy, but a key missing element is a low-nonlinearity, low-dispersion single-mode waveguide suitable for mass production. Here we show that inserting a homemade anti-resonant hollow-core fiber with nonlinear coefficient 1.97×10⁻⁷ W⁻¹m⁻¹ and single transverse mode low-loss transmission into a simple compact mode-locked cavity yields a turn-key single-pulse all-fiber laser at 2.63 MHz repetition, 103 kW peak power, and 35 nm bandwidth. The stable phase across wavelengths generates highly coherent swept signals with frequency noise of 97 Hz²/Hz via time stretching, which is useful for coherent detection, and enables swept-source optical coherence tomography with 1.6 m range and MHz frame rate, vibration sensing up to 113.2 kHz, and dispersive Fourier transform spectrometry at 1.54 pm resolution. Our scheme provides a perspective for developing high-performance low-repetition-rate mode-locked lasers and applications.
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BibTeX
@article{dang2026highenergy,
title = {{High-energy low-repetition broadband ultrafast lasers empowered by hollow-core fiber}},
author = {Laiyang Dang and Xin Zhang and Yinghui Zhuang and Wenhao Zhu and Shuyuan Zhu and Yihuan Shi and Feng Li and Pu Wang and Dongmei Huang},
journal = {Nature Communications},
year = {2026},
month = sep,
doi = {10.1038/s41467-026-78141-4},
url = {https://www.nature.com/articles/s41467-026-78141-4},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - High-energy low-repetition broadband ultrafast lasers empowered by hollow-core fiber
AU - Laiyang Dang
AU - Xin Zhang
AU - Yinghui Zhuang
AU - Wenhao Zhu
AU - Shuyuan Zhu
AU - Yihuan Shi
AU - Feng Li
AU - Pu Wang
AU - Dongmei Huang
PY - 2026
DA - 2026/09/30
JO - Nature Communications
DO - 10.1038/s41467-026-78141-4
UR - https://www.nature.com/articles/s41467-026-78141-4
AB - Low-repetition-rate ultrafast lasers with high peak power and broadband spectrum are critical for applications such as industrial processing, lidar, imaging and spectroscopy, but a key missing element is a low-nonlinearity, low-dispersion single-mode waveguide suitable for mass production. Here we show that inserting a homemade anti-resonant hollow-core fiber with nonlinear coefficient 1.97×10⁻⁷ W⁻¹m⁻¹ and single transverse mode low-loss transmission into a simple compact mode-locked cavity yields a turn-key single-pulse all-fiber laser at 2.63 MHz repetition, 103 kW peak power, and 35 nm bandwidth. The stable phase across wavelengths generates highly coherent swept signals with frequency noise of 97 Hz²/Hz via time stretching, which is useful for coherent detection, and enables swept-source optical coherence tomography with 1.6 m range and MHz frame rate, vibration sensing up to 113.2 kHz, and dispersive Fourier transform spectrometry at 1.54 pm resolution. Our scheme provides a perspective for developing high-performance low-repetition-rate mode-locked lasers and applications.
SN - 2041-1723
ER -