脉冲自发辐射放大光源的产生与放大特性研究  

Generation and Amplification Characteristics of Pulse Amplified Spontaneous Emission

作　　者：孙海跃 陈胜平[2] 齐雪 钟明飞[1] Sun Haiyue;Chen Shengping;Qi Xue;Zhong Mingfei(Chinese Satellite Maritime Tracking and Controlling Department, Jiangyin , Jiangsu 214431, China;College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, China)

机构地区：[1]中国卫星海上测控部,江苏江阴214431 [2]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《中国激光》2018年第6期27-33,共7页Chinese Journal of Lasers

摘　　要：自发辐射放大(ASE)光源作为一种非相干光源,在生物医学等领域发挥着重要作用。利用脉冲ASE光源作为抽运源激发非线性介质产生的超连续谱,具有低时间相干性和宽光谱特性,使其具备更加广阔的应用前景。研究了脉冲ASE光源的产生和放大过程,获得瓦级纳秒脉冲ASE光源;采用光纤环形反射镜结构提高带内功率,得到280mW连续窄谱带ASE输出;利用声光调制器和电光调制器共同调制连续窄谱带ASE,得到脉宽为8ns、重复频率为50kHz、平均功率为50μW的脉冲ASE;并且详细研究了具有不同脉冲波形的ASE的放大过程。As a non-coherent light source,the amplified spontaneous emission（ASE）sources play an important role in biomedical field.The pulsed ASE light source is used as a pumping source to stimulate the supercontinuum generated by the nonlinear medium,which has low temporal coherence and broad spectral characteristics,making it have a broader application prospects.The generation and amplification processes of a pulse ASE source are investigated.The nanosecond pulse ASE light source at a watt level is obtained.A fiber loop mirror structure is used to promote the in-band power,which resulting in a 280 mW continuous narrowband ASE output.And using an acousto-optic modulator and an electro-optic modulator to modulate a continuous narrowband ASE,with a pulse width of 8 ns,a repetition frequency of 50 kHz and an average power of 50μW.The amplification process of ASE with different pulse shapes is studied in detail.

关 键 词：激光光学 自发辐射放大 纳秒脉冲 光纤环形反射镜 

分 类 号：O437[机械工程—光学工程]