Yongwei Shi, Nan Zhao, Jiantao Liu, Jiaming Li, Zhiyun Hou, Guiyao Zhou, "All-fiber laser amplification at 1948 nm based on double-cladding Tm/Al co-doped photonic crystal fiber fabricated by laser additive manufacturing," Chin. Opt. Lett. 21, 121401 (2023)
- Chinese Optics Letters
- Vol. 21, Issue 12, 121401 (2023)
Fig. 1. Experiment of laser additive manufacturing.
Fig. 2. (a) Electron microscope image of Tm/Al co-doped silica fiber; (b) EPMA mapping of the Tm elements in the core; (c) linear analysis of the PCF core.
Fig. 3. Single-stage MOPA system of double-cladding Tm/Al co-doped PCF at 1948 nm.
Fig. 4. (a) The end faces cut is uneven; (b) the end faces cut is smooth.
Fig. 5. (a) PCF air-hole force map; (b) the picture of collapsed air hole; (c) acceptability results of splice PCF with passive fiber.
Fig. 6. Measured profile of MOPA system output beam.
Fig. 7. (a) Spectra of seed source and pump source at different powers; (b) slope efficiency of double-cladding Tm/Al co-doped PCF amplifier.
Fig. 8. Upconversion emission spectra under 1064 nm laser excitation.
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