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

We demonstrate sub-100-fs Kerr-lens mode-locking of a Tm:MgWO4 laser emitting at ∼2µm 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 ∼86MHz. The shortest pulse duration de...

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Bibliographic Details
Published in:Optics letters 2020-11, Vol.45 (22), p.6142-6145
Main Authors: Wang, Li, Chen, Weidong, Zhao, Yongguang, Wang, Yicheng, Pan, Zhongben, Lin, Haifeng, Zhang, Ge, Zhang, Lizhen, Lin, Zhoubin, Bae, Ji Eun, Park, Tae Gwan, Rotermund, Fabian, Loiko, Pavel, Mateos, Xavier, Mero, Mark, Griebner, Uwe, Petrov, Valentin
Format: Article
Language:English
Subjects:
Absorbers
Carbon
Lasers
Lenses
Mode locking
Nanotubes
Pulse duration
Pulse repetition rate
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Summary:We demonstrate sub-100-fs Kerr-lens mode-locking of a Tm:MgWO4 laser emitting at ∼2µm 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 ∼86MHz. 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 ∼2µm.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.411288