Shijiang Wu, Hao Xiong, Yinrui Zhang, Zheqiang Zhong, Bin Zhang. Instantaneous Beam Smoothing Technique Based on Beat Frequency of Broadband Laser[J]. Acta Optica Sinica, 2023, 43(5): 0514001
- Acta Optica Sinica
- Vol. 43, Issue 5, 0514001 (2023)
Fig. 1. Schematic diagram of instantaneous beam smoothing technique based on beat frequency of broadband laser
Fig. 2. Focal spot intensity distributions obtained by different techniques without CPP. (a) Dual-frequency monochromatic laser beat frequency technique; (b) broadband laser beat frequency technique
Fig. 3. Smoothing characteristics of different beam smoothing techniques. (a) Focal spot obtained by broadband laser beat frequency technique; (b) focal spot obtained by dual-frequency monochromatic laser beat frequency technique; (c) luminous flux contrast curve; (d) FOPAI curve; (e) PSD curve
Fig. 4. Luminous flux contrast curves under different laser bandwidths
Fig. 5. Spectra and luminous flux contrast curves for flat top and Gaussian broadband lasers under different bandwidths. (a) Spectra; (b) luminous flux contrast curves
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