A long cavity passive mode-locking fibre laser with the reflective non-linear optical loop mirror |
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| Authors: | Pinghe Wang Yibiao Tang Hanlin Peng Tiejun He Heping Li |
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| Affiliation: | 1. State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, P. R. China;2. ITS Research Center, Southeast University, Nanjing, China |
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| Abstract: | In this paper, we report a long cavity passively mode-locked fibre laser. The proposed mode locker is a reflective long cavity non-linear optical loop mirror (NOLM) which consists of a 50:50 coupler and 2-km single-mode fibres. The laser achieves stable mode locking at a fundamental repetition rate of 100 kHz. The rectangular pulses operating in dissipative soliton resonance region is generated in the laser. The relationship between the pulse duration and the pump power is investigated in detail. When the pump power is 200 mW, the laser generates rectangular pulses at 1565.57 nm (central wavelength) with pulse duration of 81.5 ns. The single pulse energy as high as 33.34 nJ is obtained. The results show that the reflective NOLM is an efficient mode locker and useful for the generation of high energy pulse. |
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| Keywords: | Fibre laser mode locking dissipative soliton resonance reflective non-linear optical loop mirror |
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