Spectral beam combining system of fiber laser by external-cavity fiber oscillator

Zhang Jingpu; Yang Yifeng; Zhao Xiang; Bai Gang; He Bing; Zhou Jun

doi:10.3788/IRLA201746.0103008

Spectral beam combining is an effective way to break through the power limitation of a monolithic fiber laser and achieve high brightness fiber laser output.A spectral beam combining scheme was presented that the single element was structured by external-cavity fiber oscillator.This scheme had more compact structure and was able to contain more elements,compared with the current MOPA structure element.A theoretical analysis was conducted about the relationship between the wavelength and position of each element,and a numerical simulation was carried out about the influence of aberrations in the transform lens on cavity loss and combining effects.An experimental system was built,and the experimental results agree well with the theoretical analysis.This work has important guiding significance for the building of next generation spectral beam combining system.

Spectral beam combining system of fiber laser by external-cavity fiber oscillator

1. Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China;

3. Nanjing Institute of Advanced Laser Technology,Nanjing 210038,China;

4. Nanjing Zhongke Shenguang Technology Co. Ltd.,Nanjing 210038,China

Received Date: 2017-06-10

Rev Recd Date: 2017-08-20

Publish Date: 2018-01-25

Key words:

Abstract: Spectral beam combining is an effective way to break through the power limitation of a monolithic fiber laser and achieve high brightness fiber laser output.A spectral beam combining scheme was presented that the single element was structured by external-cavity fiber oscillator.This scheme had more compact structure and was able to contain more elements,compared with the current MOPA structure element.A theoretical analysis was conducted about the relationship between the wavelength and position of each element,and a numerical simulation was carried out about the influence of aberrations in the transform lens on cavity loss and combining effects.An experimental system was built,and the experimental results agree well with the theoretical analysis.This work has important guiding significance for the building of next generation spectral beam combining system.

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Reference (17)

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Spectral beam combining system of fiber laser by external-cavity fiber oscillator

doi: 10.3788/IRLA201746.0103008

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