Graphene-decorated microfiber knot as a broadband resonator for ultrahigh-repetition-rate pulse fiber lasers
Searching for an ultrahigh-repetition-rate pulse on the order of hundreds of gigahertz (GHz) is still a challenging task in the ultrafast laser community. Recently, high-quality silicon/silica-based resonators were exploited to generate a high-repetition-rate pulse based on the filter-driven four-wave mixing effect in fiber lasers. However, despite their great performance, the silicon/silica-based resonators still have some drawbacks, such as single waveband operation and low coupling efficiency between the fiber and resonators. To overcome these drawbacks, herein we proposed an all-fiber broadband resonator fabricated by depositing the graphene onto a microfiber knot. As a proof-of-concept experiment, the graphene-deposited broadband microfiber knot resonator (MKR) was applied to Er- and Yb-doped fiber lasers operating at two different wavebands, respectively, to efficiently generate hundreds-of-GHz-repetition-rate pulses. Such a graphene-deposited broadband MKR could open some new applications in ultrafast laser technology, broadband optical frequency comb generation, and other related fields of photonics.
基金项目：National Natural Science Foundation of China (NSFC)10.13039/501100001809 (11474108, 11304101, 61307058, 61378036); Guangdong Natural Science Funds for Distinguished Young Scholar (2014A030306019); Program for Outstanding Innovative Young Talents of Guangdong Province (2014TQ01X220); Pearl River S&T Nova Program of Guangzhou10.13039/501100009334 (2014J2200008); Natural Science Foundation of Guangdong Province10.13039/501100003453 (2014A030311037); Program for Outstanding Young Teachers in Guangdong Higher Education Institutes (YQ2015051); Science and Technology Project of Guangdong (2016B090925004); Foundation for Young Talents in Higher Education of Guangdong (2017KQNCX051); Science and Technology Program of Guangzhou (201607010245); Scientific Research Foundation of Young Teacher of South China Normal University (17KJ09).
Rui Tang：Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices & Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications, South China Normal University, Guangzhou 510006, China
Ai-Ping Luo：Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices & Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices, South China Normal University, Guangzhou 510006, China
Wen-Cheng Xu：Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices & Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices, South China Normal University, Guangzhou 510006, Chinae-mail: email@example.com
Zhi-Chao Luo：Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices & Guangzhou Key Laboratory for Special Fiber Photonic Devices and Applications, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Engineering Technology Research Center for Microstructured Functional Fibers and Devices, South China Normal University, Guangzhou 510006, China
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Meng Liu, Rui Tang, Ai-Ping Luo, Wen-Cheng Xu, and Zhi-Chao Luo, "Graphene-decorated microfiber knot as a broadband resonator for ultrahigh-repetition-rate pulse fiber lasers," Photonics Research 6(10), C1 (2018)