Journal
LASER PHYSICS LETTERS
Volume 14, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/aa538d
Keywords
gold nanobipyramids; Yb-doped fiber laser; new saturable absorbers
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Funding
- National Natural Science Foundation of China [61475089, 61205174, 11474187]
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In this letter, gold nanobipyramids (Au-NBPs) are prepared using a seed-mediated growth method. The longitudinal surface plasmon resonance (SPR) absorption peak of the Au-NBPs is located at 1068 nm by controlling the aspect of the materials. To verify the absorption properties of the Au-NBP saturable absorber (SA), a passively Q-switched Yb-doped fiber laser is demonstrated. The maximum average output power of 3.33 mW is obtained under a pumped power of 340 mW. The minimum pulse width is 2.6 mu s at a pulse repetition rate of 66.3 kHz. The results prove that Au-NBP are a promising SA with the potential for important applications in the field of pulse lasers.
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