Journal
IEEE PHOTONICS JOURNAL
Volume 14, Issue 4, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2022.3179494
Keywords
Optical fiber amplifiers; Fiber lasers; Oscillators; Pump lasers; Laser excitation; Optical fiber dispersion; Power lasers; Neodymium doped fiber; fiber lasers; 1120 nm fiber lasers; Raman fiber lasers
Funding
- National Key R&D Program of China [2020YFC2200300]
- Zhejiang Postdoctoral Research Project, China [ZJ2020070]
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Compared with Yb, Nd has potential in 1120 nm fiber lasers, and NDF oscillator and NRF oscillator have been successfully built to study the lasing characteristics at 1120 nm.
Compared with Yb, Nd has potential in 1120 nm fiber lasers, with the characteristics of larger emission cross section and four-level structure. In this work, Nd-doped fiber (NDF) oscillator and Nd-Raman fiber (NRF) oscillator were built using single-mode 5/125 NDF to study the lasing characteristics at 1120 nm, especially the suppression of amplified spontaneous emission at 1060 nm. Limited by the parasitic oscillation at 1060 nm, the NDF oscillator achieved 5 W output at 1120 nm. The NRF oscillator removed the limitation due to the Raman shift from 1064 nm to 1120 nm and obtained an output of 7.7 W at 1120 nm with a spectral peak-to-peak contrast of 36 dB. This work provides experimental basis for the application of NDF in 1.1 mu m.
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