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Diode-pumped sub-50-fs Kerr-lens mode-locked Yb:GdYCOB laser

Abstract : We present a sub-50-fs diode-pumped Kerr-lens mode-locked laser employing a novel “mixed” monoclinic Yb:Ca4(Gd,Y)O(BO3)3 (Yb:GdYCOB) crystal as a gain medium. Nearly Fourier-limited pulses as short as 43 fs at 1036.7 nm are generated with an average power of 84 mW corresponding to a pulse repetition rate of ∼70.8 MHz. A higher average power of 300 mW was achieved at the expense of the pulse duration (113 fs) corresponding to an optical-to-optical efficiency of 35.8% representing a record-high value for any Yb-doped borate crystal. Non-phase-matched self-frequency doubling is observed in the mode-locked regime with pronounced strong spectral fringes which originate from two delayed green replicas of the fundamental femtosecond pulses in the time domain.
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https://hal.archives-ouvertes.fr/hal-03345700
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Soumis le : mardi 12 octobre 2021 - 09:50:27
Dernière modification le : mardi 19 octobre 2021 - 23:34:41

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Huangjun Zeng, Haifeng Lin, Zhanglang Lin, Lizhen Zhang, Zhoubin Lin, et al.. Diode-pumped sub-50-fs Kerr-lens mode-locked Yb:GdYCOB laser. Optics Express, Optical Society of America - OSA Publishing, 2021, 29 (9), pp.13496. ⟨10.1364/OE.424769⟩. ⟨hal-03345700⟩

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