Microfiber-based gold nanorods as saturable absorber for femtosecond pulse generation in a fiber laser

Journal Article · Mon Oct 20 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4899133· OSTI ID:22350939

Wang, Xu-De ^[1]; Luo, Zhi-Chao; Liu, Hao; Liu, Meng; Luo, Ai-Ping; Xu, Wen-Cheng ^[1]

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1. Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, Guangdong 510006 (China)

We reported on the femtosecond pulse generation from an erbium-doped fiber (EDF) laser by using microfiber-based gold nanorods (GNRs) as saturable absorber (SA). By virtue of the geometric characteristic of microfiber-based GNRs, the optical damage threshold of GNRs-SA could be greatly enhanced. The microfiber-based GNRs-SA shows a modulation depth of 4.9% and a nonsaturable loss of 21.1%. With the proposed GNRs-SA, the fiber laser emitted a mode-locked pulse train with duration of ∼887 fs. The obtained results demonstrated that the GNRs deposited microfiber could indeed serve as a high-performance SA towards the practical applications in the field of ultrafast photonics.

• OSTI ID: 22350939
• Journal Information: Applied Physics Letters, Vol. 105, Issue 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORBENTS
DAMAGE
DOPED MATERIALS
EMISSION
ERBIUM ADDITIONS
FIBERS
GOLD
LASER RADIATION
LOSSES
MODULATION
NANOSTRUCTURES
PULSES