基于新型纳米材料的可饱和吸收体在脉冲激光器中的应用

发布时间：2018-01-08 17:25

本文关键词：基于新型纳米材料的可饱和吸收体在脉冲激光器中的应用　出处：《苏州大学》2015年硕士论文　论文类型：学位论文

【摘要】：超短脉冲激光器具有峰值功率大、脉冲能量高和热效应低等特点,在诸多领域将具有广阔的应用前景。近年来,基于二维原子晶体材料和量子点材料的锁模光纤激光器以其在产生超短脉冲方面的突出优势而备受关注。本文主要研究了三种基于新型纳米材料的饱和吸收体器件,并应用于锁模光纤激光器中。主要研究内容如下:1.首次使用石墨烯和Bi2Te3异质结材料制作可饱和吸收器件,这种新型可饱和吸收体不但结合了石墨烯电子弛豫时间短和Bi2Te3光调制深度大的优势,而且通过控制生长,调节Bi2Te3覆盖率,可以实现材料的饱和吸收性能可调节和锁模光纤激光器输出特性可调节。2.首次采用二维层状黑磷-聚合物复合材料作为可饱和吸收体应用于光纤激光器。分别采用两种不同的聚合物封装技术,制备了两种黑磷-聚合物复合材料可饱和吸收体,并实现了光纤激光器的调Q和锁模脉冲输出。3.首次采用重掺杂半导体磷化亚铜(Cu3-xP)实现光纤激光器调Q输出本文比较了热处理前后,磷化亚铜量子点的光学性质和所制备的锁模光纤激光器的性能。研究发现,热处理后的量子点具有更强的等离子共振吸收能力和更强的光学非线性。所制备的锁模光纤激光器具有更高的能量和更稳定的脉冲输出。
[Abstract]:Ultrashort pulse laser with high peak power, high pulse energy and thermal effect etc., and has wide application prospect in many fields. In recent years, two-dimensional atomic crystal materials and mode-locked fiber laser quantum dot material with its outstanding advantages in the generation of ultrashort pulse has gained much attention on. This paper mainly studies the three kinds the new nano devices based on saturable absorber, and applied to the mode-locked fiber laser. The main contents are as follows: 1. for the first time the use of graphene and Bi2Te3 heterojunction material saturable absorption device, this new type of saturable absorber not only combines the advantages of graphene electronic relaxation time is short and the Bi2Te3 light modulation depth, and by control growth and regulation of Bi2Te3 coverage, can realize the material absorption properties can be adjusted and lock the output characteristics of fiber laser mode can be adjusted.2. for the first time Using a two-dimensional black phosphorus layered polymer composite as the saturable absorber used in fiber laser. Using two different polymer encapsulation technology, preparation of two kinds of black phosphorus polymer composite saturable absorber, and the realization of the fiber laser mode-locked pulse adjustable Q and.3. for the first time with a heavily doped semiconductor phosphide sub copper (Cu3-xP) to achieve the output of the fiber laser Q were compared before and after heat treatment, the optical properties of quantum dots and cuprous phosphide the performance of mode-locked fiber laser preparation. The study found that the nonlinear optical plasmon resonance quantum dots after heat treatment has a stronger absorption ability and stronger. The mode-locked fiber laser preparation has higher energy and more stable pulse output.

【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN248;TB383.1

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