Journal
LASER PHYSICS LETTERS
Volume 15, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/aa94e3
Keywords
black phosphorus; fiber laser; mode-locking; single longitudinal mode; Yb-doped laser; Er-doped laser
Categories
Funding
- National Science Foundation of China [61575127, 61505122, 61205091, 61505111]
- Guangdong Natural Science Foundation [2016A030310065, 2014A030310279]
- program of Fundamental Research of Shenzhen Science and Technology Plan [JCYJ20150324141711651, JCYJ20160328144641638, JCYJ20160422152152634, JCYJ20140828-163633996]
- Science and Technology Planning Project of Guangdong Province [2016B050501005]
- Natural Science Foundation of SZU [000059, 201452, 201517, 2016031]
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Black phosphorus (BP), 2D layered material with layered dependent direct bandgap (0.3 eV (bulk), 2.0 eV (single layer)) that has gained renewed attention, has been demonstrated as an extremely appropriate optical material for broadband optical applications from infrared to mid-infrared wavebands. Herein, by coupling multi-layer BP films with microfiber, we fabricated a nonlinear optical device with long light-matter interaction distance and enhanced damage threshold. Through taking full advantage of its fine nonlinear optical absorption property, we obtained stable mode-locking (51 ps) and Q-switched mode-locking states in Yb-doped or Er-doped (403.7 fs) all-fiber lasers and the single-longitudinal-mode operation (53 kHz) in an Er-doped fiber laser with enhanced power tolerance, using the same nonlinear optical device. Our results showed that BP could be a favorable nonlinear optical material for developing BP-enabled wave-guiding photonic devices, and revealed new insight into BP for high optical power unexplored optical devices.
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