中国激光, 2019, 46 (10): 1004005, 网络出版: 2019-10-25
光刻机扫描狭缝刀口半影宽度测量技术 下载: 1757次
Blade Edge's Penumbra Measurement for Scanning Slit of Lithographic Tools
图 & 表
图 3. 梯形照明下扫描狭缝刀口成像光路图
Fig. 3. Scanning slit imaging optical path under trapezoidal illumination
图 4. 基于扫描法得到的光场边缘光强分布
Fig. 4. Light intensity distribution at edge of light field based on scanning method
图 5. 现有扫描法在不同采样步长下的刀口半影测量结果
Fig. 5. Measurement result of penumbra by using the conventional scanning method with different sampling steps
图 6. 掩模面光强和光瞳面子光瞳分布示意图
Fig. 6. Distribution of intensity of mask surface and sub-pupil of pupil plane
图 7. 成像法测量刀口半影宽度原理图。(a) P100%;(b) P50%;(c) P0
Fig. 7. Principle of blade edge's penumbra width measurement byproposed imaging method. (a) P100%; (b) P50%; (c) P0
图 10. 两种方法的刀口半影宽度的测量重复性。(a) x-方向;(b) x+方向;(c) y-方向;(d) y+方向
Fig. 10. Repeatability of blade edge's penumbra width measured by two methods. (a) In x- direction; (b) in x+ direction; (c) in y- direction; (d) in y+ direction
表 1两种方法下的刀口半影测量重复性
Table1. Repeatability of blade edge's penumbra width measured by two methodsmm
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刘志帆, 陈明, 步扬, 徐静浩, 范李立, 张建华, 王向朝. 光刻机扫描狭缝刀口半影宽度测量技术[J]. 中国激光, 2019, 46(10): 1004005. Zhifan Liu, Ming Chen, Yang Bu, Jinghao Xu, Lili Fan, Jianhua Zhang, Xiangzhao Wang. Blade Edge's Penumbra Measurement for Scanning Slit of Lithographic Tools[J]. Chinese Journal of Lasers, 2019, 46(10): 1004005.