Kerr-lens mode-locked 49-fs Tm3+:YScO3 single-crystal laser at 2.1 µm

We report on a continuous wave (CW) and Kerr-lens mode-locked (KLM) Tm3+:YScO3 single-crystal laser centered at 2.1 µm. Efficient CW laser operation with a maximum slope efficiency of 51% was achieved under in-band pumping by an Er:Yb fiber master oscillator power amplifier (MOPA). In KLM operation,...

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Bibliographic Details
Published in:Optics letters 2023-08, Vol.48 (16), p.4221-4224
Main Authors: Suzuki, Anna, Kalusniak, Sascha, Ganschow, Steffen, Kränkel, Christian, Tokurakawa, Masaki
Format: Article
Language:English
Subjects:
Continuous radiation
Erbium
Lenses
Master oscillator/power amplifier
Short pulses
Single crystals
Thulium
Ytterbium
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Summary:We report on a continuous wave (CW) and Kerr-lens mode-locked (KLM) Tm3+:YScO3 single-crystal laser centered at 2.1 µm. Efficient CW laser operation with a maximum slope efficiency of 51% was achieved under in-band pumping by an Er:Yb fiber master oscillator power amplifier (MOPA). In KLM operation, pulses as short as 49 fs corresponding to seven optical cycles were achieved at a repetition rate of 96.7 MHz with an average output power of 126 mW. Such short pulse durations are enabled by the inhomogeneously broadened emission spectrum of Tm3+:YScO3 extending to above 2200 nm.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.497847