中国激光, 2018, 45 (6): 0601005, 网络出版: 2018-07-05  

脉冲自发辐射放大光源的产生与放大特性研究 下载: 911次

Generation and Amplification Characteristics of Pulse Amplified Spontaneous Emission
作者单位
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
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280 mW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8 ns、重复频率为50 kHz、平均功率为50 μW 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。
Abstract
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 50 μW. The amplification process of ASE with different pulse shapes is studied in detail.

孙海跃, 陈胜平, 齐雪, 钟明飞. 脉冲自发辐射放大光源的产生与放大特性研究[J]. 中国激光, 2018, 45(6): 0601005. Haiyue Sun, Shengping Chen, Xue Qi, Mingfei Zhong. Generation and Amplification Characteristics of Pulse Amplified Spontaneous Emission[J]. Chinese Journal of Lasers, 2018, 45(6): 0601005.

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