Junlong Wen, Wei Li, Jianchang Tan, Shijie Zheng, Xiaowei Li, Yun Luo, Jianjun Wang, Guoyingi Feng. Integrated mode measurement and control method based on fractional Fourier transform[J]. High Power Laser and Particle Beams, 2021, 33(11): 111009
- High Power Laser and Particle Beams
- Vol. 33, Issue 11, 111009 (2021)
Fig. 1. Diagram of fractional Fourier transform optical path
Fig. 2. Transverse light intensity distributions corressponding to the central coupling and the offset coupling
Fig. 3. Transverse light intensity distributions corressponding to different phase differences between modes
Fig. 4. Curve of the transverse intensity distributions at one point in the center of the coupling along with the phase difference between the modes
Fig. 5. Fractional Fourier modal integrated measurement and control system
Fig. 6. Relation between the fractional Fourier transform order and the modal decomposition
Fig. 7. Influence of the emission distance and the detection distance on the mode field distributions and the MPI
Fig. 8. Mode intensity distributions in x direction and y direction corresponding to spikes in Fig.7(d)
Fig. 9. Relation of intensity distributions of the primary light spotinx direction with the detection distance
Fig. 10. Modes measured by the fractional Fourier transform method ((a)~(d)) and S2method ((e)~(h))
采用分数阶傅里叶变换法和
法测量得到的模式
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