Single-walled carbon-nanotube saturable absorber assisted Kerr-lens mode-locked Tm:MgWO4 laser

Li Wang, Weidong Chen, Yongguang Zhao, Yicheng Wang, Zhongben Pan, Haifeng Lin, Ge Zhang, Lizhen Zhang, Zhoubin Lin, Ji Eun Bae, Tae Gwan Park, Fabian Rotermund, Pavel Loiko, Xavier Mateos, Mark Mero, Uwe Griebner, Valentin Petrov

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We demonstrate sub-100-fs Kerr-lens mode-locking of a Tm:MgWO4 laser emitting at ∼2 µm assisted by a single-walled carbon-nanotube saturable absorber. A maximum average output power of 100 mW is achieved with pulse duration of 89 fs at a pulse repetition rate of ∼86 MHz. The shortest pulse duration derived from frequency-resolved optical gating amounts to 76 fs at 2037 nm, corresponding to nearly bandwidth-limited pulses. To the best of our knowledge, these are the shortest pulses generated from any Tm-doped tungstate crystal and the first report on saturable absorber assisted Kerr-lens mode-locking of a Tm laser at ∼2 µm.

Original languageEnglish
Pages (from-to)6142-6145
Number of pages4
JournalOptics Letters
Volume45
Issue number22
DOIs
StatePublished - Nov 15 2020
Externally publishedYes

Funding

Acknowledgment. Y. Zhao acknowledges financial support from the Alexander von Humboldt Foundation through a Humboldt fellowship. Funding. National Natural Science Foundation of China (61975208, 51761135115, 61575199, 61850410533, 52072351); Deutsche Forschungsgemeinschaft (PE 607/14-1); Laserlab-Europe (654148); Natural Science Foundation of Jiangsu Province (BK20190104); Sino-German Scientist Cooperation and Exchanges Mobility Programme (M-0040); China Academy of Engineering Physics (YZJJLX2018005); Fund of Key Laboratory of Optoelectronic Materials Chemistry and Physics; Chinese Academy of Sciences (2008DP173016); National Research Foundation of Korea (2020R1A4A2002828); China Scholarship Council (201704910363).

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