Research on mode-locked optical fiber devices based on saturable absorbers of lead sulfide quantum dots
Citation
高博峰 (Gao Bofeng). (2024 年 3月). 基于硫化铅量子点可饱和吸收体的锁模光纤器件研究 (Research on mode-locked optical fiber devices based on saturable absorbers of lead sulfide quantum dots) [硕 士 学 位 论 文 (Master Thesis), 学科专业: 光学工程 (Discipline: Optical Engineering), 指导教师: 张贺 副研究员 (Supervisor: Associate Professor Zhang He)]. 长春理工大学 (Changchun University of Science and Technology).
Keywords
- 硫化铅量子点 / PbS Quantum Dots
- 可饱和吸收体 / Saturable Absorber, SA
- 锁模光纤器件 / Mode-locked optical fiber devices
- 光纤激光器 / Fiber laser
- 热注入法 / Hot injection method
- 液相配体置换 / Liquid phase ligand replacement
- 非饱和损耗 / Nonsaturable loss
- 调制深度 / Modulation depth
- 损伤阈值 / Damage threshold
- 重复性和一致性 / Repeatability and consistency
- 羧甲基纤维素 / Carboxymethyl Cellulose, CMC
- 双臂探测系统 / Two-arm detection system
- 泵浦-探测系统 / Pump-detection system
- 卤素配体 / Halogen ligands
- 信噪比 / Signal-to-noise ratio
- 锁模 / Mode-locking
- 光纤环形腔 / Fiber ring cavity
- 自启动锁模 / Self-started mode-locking
- 光谱带宽 / Spectral bandwidth
Brief
This master's thesis investigates mode-locked optical fiber devices utilizing lead sulfide (PbS) quantum dots as saturable absorbers, focusing on improving device performance through novel fabrication methods and surface modification of the QDs.
Summary
This master's thesis focuses on developing and enhancing mode-locked optical fiber devices that utilize lead sulfide (PbS) quantum dots as saturable absorbers. The research explores improved fabrication methods using spin coating to reduce non-saturable loss and enhance device consistency. Furthermore, it investigates the impact of surface modification of PbS QDs with halogen ligands to achieve better mode-locking quality, higher damage threshold, and improved stability in fiber lasers.
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