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11 October 2024 Study on broadband supercontinuum generation by highly GeO2 doped fiber
Shuanglong Ma, Xing Luo, Jiachen Wang, Fanlong Dong, Jinzhang Wang, Peiguang Yan, Chunyu Guo, Shuangchen Ruan
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Proceedings Volume 13287, Nineteenth National Conference on Laser Technology and Optoelectronics; 132870H (2024) https://doi.org/10.1117/12.3038573
Event: Nineteenth National Conference on Laser Technology and Optoelectronics, 2024, Shanghai, China
Abstract
Broadband supercontinuum generation in highly GeO2 doped fibers holds significant appeal for researchers due to their distinct advantages. In this study, we propose employing a low repetition rate noise-like pulse mode-locked fiber laser as the pulse seed for mid-infrared supercontinuum generation in such fibers. Utilizing only one amplifier stage to amplify the noise-like pulse, we achieved a broadband supercontinuum with a 20dB bandwidth spanning from approximately 652nm to 3350nm in a highly GeO2 doped fiber with a core GeO2 concentration of 98%, even with an output power as low as 297mW. To the best of our knowledge, this represents the widest supercontinuum achieved in highly GeO2 doped fibers to date. Additionally, we observed that further increases in pump power resulted in damage to the core of the highly GeO2 doped fibers. This posed a challenge in expanding the spectral range of the output supercontinuum by simply increasing the peak pulse power. This conclusion is of significant reference value for research on supercontinuum generation based on highly GeO2 doped fibers.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Shuanglong Ma, Xing Luo, Jiachen Wang, Fanlong Dong, Jinzhang Wang, Peiguang Yan, Chunyu Guo, and Shuangchen Ruan "Study on broadband supercontinuum generation by highly GeO2 doped fiber", Proc. SPIE 13287, Nineteenth National Conference on Laser Technology and Optoelectronics, 132870H (11 October 2024); https://doi.org/10.1117/12.3038573
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KEYWORDS
Mid infrared
Mode locking
Fiber lasers
Supercontinuum generation
Laser sources
Laser systems engineering
Education and training
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