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18 March 2024 Indium antimonide-based saturable absorber to demonstrate passively Q-switched and mode-locked operation
Hao Sun, Jianghao Xu, Zhipeng Ding, Weiyu Fan, Yun-ao Han, Cheng Lu, Guomei Wang, Caixun Bai, Wenfei Zhang, Huanian Zhang, Wei Ju, Shenggui Fu
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Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131046R (2024) https://doi.org/10.1117/12.3023856
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China
Abstract
In this work, an Indium Antimonide-polyvinyl alcohol (InSb-PVA) film was fabricated, and its nonlinear characteristics were researched. The modulation depth intensity and saturation intensity were 13.61% and 2.02 MW/cm2, correspondingly. Based on InSb as a saturable absorber (SA), an erbium-doped fiber laser (EDFL) with passively Q-switched and mode-locked operation was generated. The Q-switched operation was achieved with a maximum pulse energy of 45.8 nJ and a minimum pulse duration of 4.3 μs. As the pump power rises, the repetition rate rises from 7.6 kHz to 25.05 kHz and the pulse duration falls from 20.1 μs to 4.3 μs. By adjusting the length of the single-mode fiber to manage the dispersion, a stable mode-locked EDFL with a maximum average output power of 8.03 mW and a central wavelength of 1566.54 nm was obtained. The experimental results fully demonstrated that InSb has remarkable nonlinear absorption performance and enormous potential for ultra-fast photonics devices.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Hao Sun, Jianghao Xu, Zhipeng Ding, Weiyu Fan, Yun-ao Han, Cheng Lu, Guomei Wang, Caixun Bai, Wenfei Zhang, Huanian Zhang, Wei Ju, and Shenggui Fu "Indium antimonide-based saturable absorber to demonstrate passively Q-switched and mode-locked operation", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131046R (18 March 2024); https://doi.org/10.1117/12.3023856
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KEYWORDS
Mode locking
Q switching
Indium
Ultrafast phenomena
Fiber lasers
Signal intensity
Nanosheets
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