Systematic exploration and characterization on the influence of dispersion to pulse characteristics in Tm-doped NPE mode-locked fiber oscillator

被引：3
|
作者：
Zhu, Junwei [1 ,2 ]
Ge, Siyu [1 ,2 ]
Wang, Juan [1 ,2 ]
Zhang, Weiwang [1 ,2 ]
Ren, Hongfei [1 ,2 ]
Yan, Bin [1 ,2 ]
Mo, Shaohui [1 ,2 ]
Qiu, Miao [1 ,2 ]
Xia, Kai [1 ,2 ]
Yang, Peilong [1 ,2 ]
Dai, Shixun [1 ,2 ]
Bai, Shengchuang [1 ,2 ]
Xu, Peipeng [3 ]
Nie, Qiuhua [1 ,2 ]
机构：
[1] Ningbo Univ, Adv Technol Res Inst, Lab Infrared Mat & Devices, Ningbo 315211, Zhejiang, Peoples R China
[2] Key Lab Photoelect Detect Mat & Devices Zhejiang, Ningbo 315211, Zhejiang, Peoples R China
[3] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2021年 / 115卷
基金：
美国国家科学基金会;
关键词：
Ultra-short pulse; Mode-locked laser; Dispersion management; 2; MU-M; LASER; GENERATION; THULIUM; FS; EVOLUTION; OPERATION; SOLITONS; NM;
D O I：
10.1016/j.infrared.2021.103722
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We present a systematic and experimental exploration on the influence of the second-order and third-order dispersion on pulse characteristics in an ultra-high numerical aperture (UHNA) fiber dispersion-managed, Tmdoped and nonlinear polarization evolution (NPE) mode-locked fiber laser cavity; and obtained the detailed regularity of the variation of the key parameters for mode-locked pulse, including pulse duration, pulse spectral profile, and pulse signal-to-noise ratio (SNR) with dispersion. In this process, we find that there are two interesting second-order dispersion points of -0.207 ps2 and 0.09 ps2, in which the pulse SNRs can be optimized to as high as 79 dB and 78 dB, respectively, considerably higher than that in other positions. Besides, the experimental results show that the value of third-order dispersion can not only impact the pulse spectrum but also monotonously affect the quality of pulse SNR. To the best of our knowledge, this is the first report on the detailed analysis of the effects of both the second and the third-order dispersion values on the pulse characteristics in 2 mu m mode-locked fiber laser cavity and it will be an important reference to the realization of a Tm-doped modelocked laser with high pulse contrast.
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页数：6
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