期刊
OPTICAL ENGINEERING
卷 55, 期 8, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.OE.55.8.081318
关键词
ultrafast lasers; fiber lasers; graphene; transition mental dichalcogenides
类别
资金
- National Natural Science Foundation of China [61205080, 61308049]
- Natural Science Fund of Guangdong Province [2014A030313387]
- Science and Technology Project of Shenzhen City [JCYJ20140418091413568, 20140418095735582, JCYJ20150324140036862, JCYJ20130329142116637, JCYJ20150324140036870, JCYJ20140418091413577]
- Youth Science and Technology Innovation Talents of Guangdong [2014TQ01X539]
We propose two schemes for achieving tungsten disulfide (WS2)-based saturable absorber (SA) and saturable absorber mirror (SAM). By utilizing the pulsed laser deposition method, we grow the WS2 film on microfiber to form an evanescent field interaction SA device. Incorporating this SA device into a common ring-cavity erbium-doped fiber (EDF) laser, stably passive mode-locking can be achieved with pulse duration of 395 fs and signal-to-noise ratio of 64 dB. We also produce a fiber tip integrated WS2-SAM by utilizing the magnetron sputtering technique (MST). This new type of SAM combines the WS2 layer as SA and gold mirror as high reflective mirror. By employing the WS2-SAM, we construct the linear-cavity EDF lasers, and achieve passive mode-locking operation with pulse duration of similar to 1 ns and SNR of similar to 61 dB. We further achieve stably passive Q-switching operation with pulse duration of similar to 160 ns and pulse energy of 54.4 nJ. These fiber-integrated SAs and SAMs have merits of compactness and reliability, paving the way for the development of new photonic devices such as SAs for pulsed laser technology. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License.
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