980-nm all-fiber mode-locked Yb-doped phosphate fiber oscillator based on semiconductor saturable absorber mirror and its amplifier

doi:10.1088/1674-1056/25/8/084207

Abstract A 980-nm semiconductor saturable absorber mirror (SESAM) mode-locked Yb-doped phosphate fiber laser is demonstrated by using an all-fiber linear cavity configuration. Two different kinds of cavity lengths are introduced into the oscillator to obtain a robust and stable mode-locked seed source. When the cavity length is chosen to be 6 m, the oscillator generates an average output power of 3.5 mW and a pulse width of 76.27 ps with a repetition rate of 17.08 MHz. As the cavity length is optimized to short, 4.4-mW maximum output power and 61.15-ps pulse width are produced at a repetition rate of 20.96 MHz. The output spectrum is centered at 980 nm with a narrow spectral bandwidth of 0.13 nm. In the experiment, no undesired amplified spontaneous emission (ASE) nor harmful oscillation around 1030 nm is observed. Moreover, through a two-stage all-fiber-integrated amplifier, an output power of 740 mW is generated with a pulse width of 200 ps.

Keywords: 980-nm fiber laser SESAM mode-locking Yb-doped phosphate fiber fiber amplifier

Received: 11 January 2016
Revised: 23 March 2016
Accepted manuscript online:

PACS:	42.55.Wd	(Fiber lasers)
	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.60.Fc	(Modulation, tuning, and mode locking)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61205047).

Corresponding Authors: Ping-Xue Li
E-mail: pxli@bjut.edu.cn

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Ping-Xue Li(李平雪), Yi-Fei Yao(姚毅飞), Jun-Jie Chi(池俊杰), Hao-Wei Hu(胡浩伟), Guang-Ju Zhang(张光举), Bo-Xing Liang(梁博兴), Meng-Meng Zhang(张孟孟), Chun-Mei Ma(马春媚), Ning Su(苏宁) 980-nm all-fiber mode-locked Yb-doped phosphate fiber oscillator based on semiconductor saturable absorber mirror and its amplifier 2016 Chin. Phys. B 25 084207

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980-nm all-fiber mode-locked Yb-doped phosphate fiber oscillator based on semiconductor saturable absorber mirror and its amplifier

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