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arXiv · 2310.13928

GHz repetition rate, sub-100-fs Ho:CALGO laser at 2.1 um with watt-level average power

Weichao Yao·Mohsen Khalili·Yicheng Wang·Martin Hoffmann·Marcel van Delden·Thomas Musch·Clara J. Saraceno
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Abstract

We report on a GHz fundamental repetition rate Kerr-lens mode-locked Ho:CALGO laser emitting at 2.1 um. The laser employs a ring-cavity to increase the fundamental repetition rate to 1.179 GHz and can be made to oscillate in both directions stably with nearly identical performance: for counterclockwise oscillation, it generates 93-fs pulses at 1.68 W of average power, whereas 92 fs and 1.69 W were measured for clockwise operation. Our current results represent the highest average power from a 2-um GHz oscillator and the first sub-100-fs pulse duration from a Ho-based oscillator.

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Weichao Yao, Mohsen Khalili, Yicheng Wang, Martin Hoffmann, Marcel van Delden, Thomas Musch, Clara J. Saraceno. 2023-10-21. GHz repetition rate, sub-100-fs Ho:CALGO laser at 2.1 um with watt-level average power. https://arxiv.org/abs/2310.13928

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