Mode-locking of a Tm,Ho:CALYGO laser delivering 50&#x2009;fs pulses at 2.08 &#x00B5;m

Heng Ding; Jian Liu; Yinyin Wang; Ning Zhang; Zhanxin Wang; Zhanxin Wang; Yongguang Zhao; Yongguang Zhao; Xiaodong Xu; Xiaodong Xu; Yanyan Xue; Jun Xu; Uwe Griebner; Valentin Petrov

doi:10.1364/OL.510740

Optics Letters
Vol. 48,
Issue 23,
pp. 6267-6270
(2023)
•https://doi.org/10.1364/OL.510740

Mode-locking of a Tm,Ho:CALYGO laser delivering 50 fs pulses at 2.08 µm

Heng Ding, Jian Liu, Yinyin Wang, Ning Zhang, Zhanxin Wang, Yongguang Zhao, Xiaodong Xu, Yanyan Xue, Jun Xu, Uwe Griebner, and Valentin Petrov

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Heng Ding, Jian Liu, Yinyin Wang, Ning Zhang, Zhanxin Wang, Yongguang Zhao, Xiaodong Xu, Yanyan Xue, Jun Xu, Uwe Griebner, and Valentin Petrov, "Mode-locking of a Tm,Ho:CALYGO laser delivering 50 fs pulses at 2.08 µm," Opt. Lett. 48, 6267-6270 (2023)

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Abstract

We study the polarization-dependent laser performance of a novel, to the best of our knowledge, “mixed” Tm,Ho:CaYGdAlO₄ crystal in the continuous-wave (CW) and mode-locked regimes. Both in terms of the CW tunability range (261 nm) and the minimum pulse duration (50 fs at 2078 nm, spectral width of 95 nm) in the mode-locked regime, σ-polarization is superior. With extended inhomogeneous spectral broadening due to structural and compositional disorder, Tm,Ho:CaYGdAlO₄ is promising for few-optical-cycle pulse generation around 2 µm.

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Supplementary Material (1)

Name	Description
Supplement 1	Supplement 1:Wavelength tuning performances with TOC = 1.5% and 3%, and Mode-locking performance with chirped mirrors CM1 and CM2

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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