Power-scalable sub-100-fs Tm laser at 2.08 μm. (23rd September 2021)

• Record Type: Journal Article
• Authors: Wang, Li; Chen, Weidong; Zhao, Yongguang; Yang, Hanlin; Jing, Wei; Pan, Zhongben; Huang, Hui; Liu, Jiachen; Bae, Ji Eun; Rotermund, Fabian; Loiko, Pavel; Mateos, Xavier; Wang, Zhengping; Xu, Xinguang; Griebner, Uwe; Petrov, Valentin
• Is Part Of: High power laser science and engineering. Volume 9(2021)
• Publication Date: 2021-09-23
• Subjects: 2-μm mode-locked laser -- single-walled carbon nanotubes -- Tm:(Lu, Sc)2O3; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2021.42
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract: We report on a power-scalable sub-100-fs laser in the 2-μm spectral range using a Tm 3+ -doped 'mixed' (Lu, Sc)2 O3 sesquioxide ceramic as an active medium. Pulses as short as 58 fs at 2076 nm with an average output power of 114 mW at a pulse repetition rate of approximately 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber. A higher average power of 350 mW at 2075 nm is obtained at the expense of the pulse duration (65 fs). A maximum average power of 486 mW is achieved for a pulse duration of 98 fs and an optical conversion efficiency of 22.3%, representing the highest value ever reported from sub-100-fs mode-locked Tm lasers.