Highly efficient Cherenkov radiation generation in the irregular point of hollow-core photonic crystal fiber

Highly efficient Cherenkov radiation （CR） is generated by the soliton self-frequency shift （SSFS） in the irregular point of a hollow-core photonic crystal fiber （HC-PCF） in our laboratory. The impacts of pump power and wavelength on the CR are investigated, and the corresponding nonlinear processes...

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Bibliographic Details
Published in:Chinese physics B 2012-11, Vol.21 (11), p.222-226
Main Author: 申向伟 苑金辉 桑新柱 余重秀 饶兰 夏民 韩颖 夏长明 侯蓝田
Format: Article
Language:English
Subjects:
Computational efficiency
Conversion
Crystal fibers
Mathematical analysis
Photonic crystals
Pumps
Solitons
Wavelengths
光子晶体光纤
切伦科夫辐射
孤子自频移
平均功率
最大输出功率
泵浦脉冲
空心
非线性过程
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Summary:Highly efficient Cherenkov radiation （CR） is generated by the soliton self-frequency shift （SSFS） in the irregular point of a hollow-core photonic crystal fiber （HC-PCF） in our laboratory. The impacts of pump power and wavelength on the CR are investigated, and the corresponding nonlinear processes are discussed. When the average power of the 120 fs pump pulse increases from 500 mW to 700 mW, the Raman soliton shifts from 2210 nm to 2360 nm, the output power of the CR increases by 2.3 times, the maximum output power ratio of the CR at 539 nm to that of the residual pump is calculated to be 24.32：1, the width of the output optical spectrum at the visible wavelength broadens from 35 nm to 62 nm, and the conversion efficiency η of the CR in the experiment can be above 32%.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/11/114102