Rapid growth of a long-seed KDP crystal 
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1 Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
3 School of Aerospace Engineering, Tsinghua University, Beijing100084, China
4 Department of Engineering Physics, Tsinghua University, Beijing100084, China
Figures & Tables
Fig. 1. Long-seed KDP crystal with size $471~\text{mm}\times 480~\text{mm}\times 400~\text{mm}$.
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Fig. 2. THG-oriented samples cut from the cuboid KDP-type crystal (left) and the long-seed KDP-type crystal (right).
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Fig. 3. HRXRD pattern of the long-seed KDP crystal.
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Fig. 4. Transmittance of the long-seed KDP crystal.
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Fig. 5. LIDT of the long-seed KDP crystal.
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Fig. 6. LID scattering image at $30~\text{J}/\text{cm}^{2}$ (3 ns, 355 nm).
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Fig. 7. Morphology of the LID bulks in Figure 6.
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Table1. Fitting of different kinds of defects.
| Defect type | Fitted LIDT | Fitted density |
|---|
| ($\text{J}/\text{cm}^{2}$ at 3 ns, 355 nm) | ($\text{mm}^{-3}$) |
|---|
| Lowest LIDT | 8.72 | 0.063 | | Moderate LIDT | 14.64 | 0.748 | | Highest LIDT | 23.72 | 2.644 |
|
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Duanyang Chen, Bin Wang, Hu Wang, Xiangyu Zhu, Ziyuan Xu, Yuanan Zhao, Shenghao Wang, Kaizao Ni, Lili Zheng, Hui Zhang, Hongji Qi, Jianda Shao. Rapid growth of a long-seed KDP crystal[J]. High Power Laser Science and Engineering, 2020, 8(1): 010000e6.
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