高质量的2μm高重频谐波锁模激光器
发布时间:2021-06-10 01:55
2μm被动锁模光纤激光器因在光通信、医药学、中红外、激光雷达等领域的具有广泛的应用前景,已经成为了近些年来激光领域广大科研工作者的研究热点。本文分别从理论和实验上研究了2μm掺铥光纤激光器中的基频锁模和高重频谐波锁模孤子脉冲产生方法,相关研究工作可分为如下三个部分:(1)基于非线性薛定谔方程,我们建立了基于非线性偏振旋转的2微米被动锁模掺铥光纤激光器的数值模型。通过分步傅里叶法求解,我们研究了基频孤子随泵浦功率的演化情况,优化了掺铥光纤和普通单模光纤SMF28e的长度,结果表明当掺铥光纤长度5 m,普通单模光纤SMF28e为31 m时可获得脉冲能量最大基频孤子。(2)我们搭建了基于非线性偏振旋转的基频锁模掺铥光纤激光器,谐振腔总长度为36 m,腔内净色散为-2.9 ps2。当泵浦功率为1.232 W时,可获得稳定的基频锁模孤子,其脉冲重复频率为5.8 MHz,与腔长相匹配,孤子光谱中心波长和半高全宽分别为1992.7 nm和2.02 nm,实验测得的脉冲宽度为2.2 ps,最大输出功率为10 mW,脉冲能量为1.72 nJ。为了提升基频孤子的脉冲重复频率并实现锁模...
【文章来源】:电子科技大学四川省 211工程院校 985工程院校 教育部直属院校
【文章页数】:46 页
【学位级别】:硕士
【文章目录】:
摘要
abstract
Chapter 1 Introduction
1.1 Mode-Locked Fiber Laser
1.2 2μm Laser Sources
1.3 Thesis Outlines
Chapter 2 Theoretical Interpretation of Mode-Locked Laser
2.1 Pulse Propagation in Fibers
2.2 Mode-Locked Regime Based on Nonlinear Polarization Rotation
2.3 Numerical Algorithm
2.4 Simulation of Passive Mode-Locked Fiber Laser
2.5 Conclusion
Chapter 3 Experiment on Mode-Locked Fiber Lasers
3.1 Experiment Setup of Passive Mode-Locked Fiber Laser
3.2 Experimental Results and Discussion of Fundamental Soliton Mode Locking
3.3 Improvement of Repetition Rate for Fundamental Solitons
3.4 Conclusion
Chapter 4 Harmonic Mode-Locked Tm-doped Fiber Laser
4.1 Experimental Setup of Harmonic Mode-Locked Tm-doped Fiber Laser
4.2 Experimental Results
4.3 Discussion
4.4 Conclusion
Chapter 5 Conclusions and Future Work
5.1 Conclusions
5.2 Outlook
Acknowledgement
References
本文编号:3221777
【文章来源】:电子科技大学四川省 211工程院校 985工程院校 教育部直属院校
【文章页数】:46 页
【学位级别】:硕士
【文章目录】:
摘要
abstract
Chapter 1 Introduction
1.1 Mode-Locked Fiber Laser
1.2 2μm Laser Sources
1.3 Thesis Outlines
Chapter 2 Theoretical Interpretation of Mode-Locked Laser
2.1 Pulse Propagation in Fibers
2.2 Mode-Locked Regime Based on Nonlinear Polarization Rotation
2.3 Numerical Algorithm
2.4 Simulation of Passive Mode-Locked Fiber Laser
2.5 Conclusion
Chapter 3 Experiment on Mode-Locked Fiber Lasers
3.1 Experiment Setup of Passive Mode-Locked Fiber Laser
3.2 Experimental Results and Discussion of Fundamental Soliton Mode Locking
3.3 Improvement of Repetition Rate for Fundamental Solitons
3.4 Conclusion
Chapter 4 Harmonic Mode-Locked Tm-doped Fiber Laser
4.1 Experimental Setup of Harmonic Mode-Locked Tm-doped Fiber Laser
4.2 Experimental Results
4.3 Discussion
4.4 Conclusion
Chapter 5 Conclusions and Future Work
5.1 Conclusions
5.2 Outlook
Acknowledgement
References
本文编号:3221777
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