Xin Zhang, Wei Zhou, Wanjun Dai, Dongxia Hu, Xuewei Deng, Wanqing Huang, Lidan Zhou, Qiang Yuan, Xiaoxia Huang, De’en Wang, Ying Yang. Surface phase defects induced downstream laser intensity modulation in high-power laser facility[J]. High Power Laser Science and Engineering, 2016, 4(1): 010000e6
- High Power Laser Science and Engineering
- Vol. 4, Issue 1, 010000e6 (2016)
Fig. 1. Surface phase defects induced small-scale intensity modulation.
Fig. 2. Surface phase defects exist on the reflecting mirrors. These mirrors support lasers with beam size $360~\text{mm}\times 360~\text{mm}$ .
Fig. 3. (a) Simulated laser intensity modulation before FOA and (b) the experimental result. The simulated and experimentally captured beam sizes are both $360~\text{mm}\times 360~\text{mm}$ .
Fig. 4. $3{\it\omega}$ intensity modulation in the FOA. THG denotes three harmonic generations.
Fig. 5. Damage on the vacuum window after (a) 2.2 and (b) $3.1~\text{J}/\text{cm}^{2}$ ultraviolet operating fluences. The periphery frame indicates the laser-passing area of $360~\text{mm}\times 360~\text{mm}$ .
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