Yufei Duan, Feng Li, Zhi Yang, Qianglong Li, Yang Yang, Tianhao Wu, Yishan Wang, Xiaojun Yang. Femtosecond Chirped Pulse Amplification System with Liquid Crystal Spatial Light Modulator for Spectral Modulation[J]. Chinese Journal of Lasers, 2021, 48(11): 1101001
- Chinese Journal of Lasers
- Vol. 48, Issue 11, 1101001 (2021)
Fig. 1. Experimental setup of shaping-compression system
Fig. 2. Principle diagram of reflective liquid crystal spatial light modulator
Fig. 3. Theoretical simulation by inverse operation. (a) Defined ideal spectral shape; (b) desired spectral shape obtained by inverse operation; (c) required two-dimensional grayscale map
Fig. 4. Spectral shaping effects and corresponding grayscale maps. (a1)(a2) Flat-top type; (b1)(b2) center-suppression type; (c1)(c2) triangle type; (d1)(d2) continuous suppression type
Fig. 5. Spectral comparison before and after amplification. (a) Before entering main amplification system; (b) after passing through main amplification system
Fig. 6. Final spectral shape after modulation
Fig. 7. Limited pulse duration comparison before and after modulation. (a) Before spectral modulation; (b) after spectral modulation
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Table 1. Parameters of spatial light modulator
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