Tunable single-longitudinal-mode Ytterbium all fiber laser with saturable-absorber-based auto-tracking filter |
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| Authors: | Feifei Yin Sigang Yang Hongwei Chen Minghua Chen Shizhong Xie |
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| Institution: | 1. R&D Center of High Power Laser Components, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Key Lab Transparent Optofunct Inorgan Mat, Shanghai Institute of ceramics, Chinese Academy of Sciences, Shanghai 200050, China;1. Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;3. Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China;4. Shanghai Institute of Satellite Engineering, Shanghai 201109, China;1. State Key Laboratory of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, 510641, China;2. School of Information and Electrical Engineering, Zhejiang University City College, Hangzhou, Zhejiang, 310015, China;3. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai, 200072, China;4. State Key Laboratory of Transient Optics and Photonics, Xi''an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi''an, 710119, China;5. Wuhan National Laboratory of Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China;6. College of Optical Science and Engineering, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027, China;1. Dream Institute of Technology, P.O. Bishnupur, Samali, 24 Parganas(S), Kolkata, India;2. Department of Electronic Science, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India;1. Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad, Iraq;2. Madenat Alelem University College, Baghdad, Iraq |
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| Abstract: | A broadband tunable, single-longitudinal-mode (SLM) Ytterbium fiber laser with unpumped Ytterbium-doped Sagnac loop is proposed and demonstrated experimentally. The unpumped Ytterbium-doped Sagnac loop is employed as a saturable absorber based auto-tracking filter to ensure single-longitudinal-mode oscillation. And a tunable band pass optical filter with large tuning range is applied to achieve broadband tuning ability. With 1-m Ytterbium-doped fiber as the gain medium, the SLM operation is achieved with over 60-nm wavelength tuning range at 160-mW pump power. The laser is very stable with output power of about 3 dBm and optical signal to noise ratio of higher than 50 dB in all the 60-nm tuning range. |
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