窄线宽1336.6nm激光技术研究
发布时间：2018-12-13 19:00
【摘要】：1.3μm波段激光在激光医疗、光谱学、光纤通信系统、军事和倍频红光等方面有有重要的应用前景，近年来成为激光研究的热点。而27Al+光频标的发展迫切需要波长精度高、线宽窄、稳定性好的1336.632nm激光器，本论文主要致力于该方面的研究。Nd:GYSGG晶体作为一种新型的晶体材料，具有很多优点，如有效分凝系数大，荧光寿命长等，我们选用它作为增益介质来产生1336.6nm激光，本论文的主要研究内容如下： 1.研制成功1336nm窄线宽Nd:GYSGG扭转模激光器。基于准连续808nm LD侧面泵浦Nd:GYSGG晶体结构，电源脉冲重频为10Hz，脉冲宽度为1ms，采用两个λ/4波片和55.4°偏振片结合来消除光场在增益介质中的驻波分布，从而获得单波长激光输出，并用双折射滤光片和0.3mmFP标准具调谐，在平均泵浦功率为47W时，获得了1.848W的1336.46nm激光输出。 2.根据相关文献的理论基础确定了损耗差的计算方法，通过Matlab和Solidworks软件完成单块非平面环形腔的设计。 3.首次研制成功1336.6nm窄线宽声光调Q Nd:GYSGG环形激光器。基于准连续808nm LD侧面泵浦Nd:GYSGG晶体结构，电源脉冲重频为10Hz，脉冲宽度为1ms，在42.3W的平均泵浦功率下，首次获得最大平均输出功率367mW的1336.6nm可调谐激光输出，在该功率处的线宽为0.85pm，脉宽和重频分别为300ns和80Hz，，对应的平均平均峰值功率为15.3kW。
[Abstract]:The 1.3 渭 m band laser has an important application prospect in the fields of laser medical treatment, spectroscopy, optical fiber communication system, military and frequency-doubling red light, etc. In recent years, it has become a hot spot in laser research. However, the development of 27Al optical frequency standard urgently needs 1336.632nm lasers with high wavelength accuracy, narrow line width and good stability. This thesis is mainly devoted to the research in this field. As a new crystal material, Nd:GYSGG crystal has many advantages. If the effective coagulation coefficient is large and the fluorescence lifetime is long, we choose it as the gain medium to generate 1336.6nm laser. The main contents of this thesis are as follows: 1. 1336nm narrow linewidth Nd:GYSGG torsion mode laser is successfully developed. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Two 位 / 4 wave plates and 55.4 掳polarizer are combined to eliminate the standing wave distribution of the optical field in the gain medium. The single wavelength laser output is obtained and tuned with birefringent filter and 0.3mmFP standard. When the average pump power is 47 W, the 1336.46nm laser output of 1.848 W is obtained. 2. According to the theoretical basis of relevant literature, the loss difference calculation method is determined, and the design of single block non-planar ring cavity is completed by Matlab and Solidworks software. 3. 1336.6nm narrow linewidth acoustooptic Q-switched Nd:GYSGG ring laser has been developed for the first time. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Under the average pumping power of 42.3 W, the 1336.6nm tunable laser output with the maximum average output power 367mW is obtained for the first time. The line width at this power is 0.85 pm, the pulse width and repetition frequency are 300ns and 80 Hz, respectively, and the corresponding average peak power is 15.3 kW.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN24
本文编号：2377058
[Abstract]:The 1.3 渭 m band laser has an important application prospect in the fields of laser medical treatment, spectroscopy, optical fiber communication system, military and frequency-doubling red light, etc. In recent years, it has become a hot spot in laser research. However, the development of 27Al optical frequency standard urgently needs 1336.632nm lasers with high wavelength accuracy, narrow line width and good stability. This thesis is mainly devoted to the research in this field. As a new crystal material, Nd:GYSGG crystal has many advantages. If the effective coagulation coefficient is large and the fluorescence lifetime is long, we choose it as the gain medium to generate 1336.6nm laser. The main contents of this thesis are as follows: 1. 1336nm narrow linewidth Nd:GYSGG torsion mode laser is successfully developed. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Two 位 / 4 wave plates and 55.4 掳polarizer are combined to eliminate the standing wave distribution of the optical field in the gain medium. The single wavelength laser output is obtained and tuned with birefringent filter and 0.3mmFP standard. When the average pump power is 47 W, the 1336.46nm laser output of 1.848 W is obtained. 2. According to the theoretical basis of relevant literature, the loss difference calculation method is determined, and the design of single block non-planar ring cavity is completed by Matlab and Solidworks software. 3. 1336.6nm narrow linewidth acoustooptic Q-switched Nd:GYSGG ring laser has been developed for the first time. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Under the average pumping power of 42.3 W, the 1336.6nm tunable laser output with the maximum average output power 367mW is obtained for the first time. The line width at this power is 0.85 pm, the pulse width and repetition frequency are 300ns and 80 Hz, respectively, and the corresponding average peak power is 15.3 kW.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN24
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