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Lasers
Q-switched and mode-locked Er3+-doped fibre laser using a single-multi-single fibre filter and piezoelectric
Ji Wang, Yunjun Zhang, Aotuo Dong, Xiaoxin Xu, Youlun Ju, Baoquan Yao Key Laboratory of Tunable Laser Technology, Harbin
Institute of Technology, Harbin, China
Abstract:
The active Q-switched and passive mode-locked Er3+-doped all-fibre laser is presented. The fibre laser centre wavelength is located at 1563 nm and determined by the homemade singlemulti- single (SMS) in-line fibre filter. The laser spectrum width is nearly 0.1 nm. The active Q-switched mechanism relies on the polarisation state control using a piezoelectric to press a segment of passive fibre on the circular cavity. The nonlinear polarisation rotation technology is used to realise the passive self-started modelocked operation. In the passive mode-locked regimes, the output average power is 2.1 mW, repetition frequency is 11.96 MHz, and single pulse energy is 0.18 nJ. With the 100-Hz Q-switched regimes running, the output average power is 1.5 mW. The total Q-switched pulse width is 15 μs, and every Q-switched pulse is made up by several tens of mode-locked peak pulses. The calculated output pulse energy of the Q-switched fibre laser is about 15 μJ, and the energy of every mode-locked pulse is about 64–68 nJ during a Q-switched pulse taking into account the power fraction propagating between pulses.
Keywords:
fibre laser, mode-locking and Q-switching, multi-mode interference filter.
Received: 11.12.2012 Revised: 09.04.2013
Citation:
Ji Wang, Yunjun Zhang, Aotuo Dong, Xiaoxin Xu, Youlun Ju, Baoquan Yao, “Q-switched and mode-locked Er3+-doped fibre laser using a single-multi-single fibre filter and piezoelectric”, Kvantovaya Elektronika, 44:4 (2014), 298–300 [Quantum Electron., 44:4 (2014), 298–300]
Linking options:
https://www.mathnet.ru/eng/qe15086 https://www.mathnet.ru/eng/qe/v44/i4/p298
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Statistics & downloads: |
Abstract page: | 281 | Full-text PDF : | 77 | References: | 19 | First page: | 9 |
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