Numerical Modeling of Dual-wavelength Pumped Heavily-Ho3+-Doped Fluoroindate Fiber Lasers with Efficient Output at 3.92 μm

In this paper, laser emission at 3.92 μm in heavily-holmium-doped fluoride fibers using 888 nm and 1660 nm laser as pumping sources is investigated through numerical modeling. The dual-wavelength pumping system has lower threshold and higher slope efficiency than the single-wavelength pumping system...

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Bibliographic Details
Published in:Journal of lightwave technology 2023-11, Vol.41 (22), p.1-8
Main Authors: Cheng, Zhuowei, Zhang, Zhi, Wang, Ruicong, Wang, Shunbin, Li, Xiaoxu, Chormaic, Sile Nic, Jia, Shijie, Wang, Pengfei
Format: Article
Language:English
Subjects:
Absorption
Cross relaxation
DWP
Energy transfer
Erbium-doped fiber lasers
Fiber lasers
Holmium
holmium doped
InF3 fiber
Laser damage
Laser excitation
Laser modes
Laser pumping
Laser theory
Mathematical models
Numerical models
Power lasers
Pump lasers
theoretical analysis
Yield point
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Summary:In this paper, laser emission at 3.92 μm in heavily-holmium-doped fluoride fibers using 888 nm and 1660 nm laser as pumping sources is investigated through numerical modeling. The dual-wavelength pumping system has lower threshold and higher slope efficiency than the single-wavelength pumping system at 888 nm. In addition, the system can decrease the heat load due to the 1660 nm input influencing the energy transfer up-conversion and cross-relaxation processes effectively, which indicates the possibility of raising the laser heat-damage threshold and providing high-power 3.92 μm laser generation. This research represents a novel method for improving the performance of 3.92 μm fiber lasers.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2023.3295126