Layered Ta2NiS5 Q-Switcher for Mid-Infrared Fluoride Fiber Laser

IEEE Photonics Journal

Longlong Chen¹  Chujun Zhao¹  Yuan He¹  Jie Li¹  Qinwen Duan¹  Lili Miao¹  Lingling Yang¹ 

[1]Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha, China

关键词: Infrared lasers;    fiber lasers;    Q-switched lasers;    optoelectronic materials;   

DOI  :  10.1109/JPHOT.2021.3094545

来源: DOAJ

【 摘 要 】

We have demonstrated the stable Q-switched Er-doped fluoride fiber laser with the help of the few-layered Ta₂NiS₅ in the mid-infrared spectral range. We fabricated the mid-infrared saturable absorber mirror (SAM) by depositing the layered Ta₂NiS₅ on a gold mirror. The layered Ta₂NiS₅ exhibited saturable absorption behavior with modulation depth 36% and saturation intensity 32.2 GW/cm² at 2800 nm, respectively. With the Ta₂NiS₅-SAM, stable Q-switched pulses around 2.8 μm wavelength can be delivered with a pulse duration of 1.20 μs and a repetition rate of 102 kHz under an incident pump power of 860 mW from the ZBLAN fiber laser cavity. The experimental results confirm that Ta₂NiS₅ has great potentials as broadband saturable absorber in mid-infrared regions, paving the way for the application of low-dimensional ternary chalcogenide in broadband optoelectronic devices.

【 授权许可】

Unknown