可实现任意形状的高效Zernike照明器
-
摘要: 基于Zernike的零级谱位相修正法能将单束激光以几乎是100%的高效 率转换成规则或不规则的振幅阵列,我们给出了位相和照明孔径空间压缩比之间的关系, 并用一对位相板在实验上实现效率达89%, 3/4空间压缩比的3×3方形照明阵列。Abstract: Based on the Zernike method of the zeroorder spectral phase modification a single expanded laser beam can be converted into arbitrary illuminated shape with theoretical 100% efficiency with a pair of spec ific binary phase gratings. We have obtained the relation among the phases and t he phasemodulated space factor of the aperture.Experimental demonstration of 3/4 space factor, 3×3π phasemod ulatedsquare areas with 89% efficiency is given.
-
Key words:
- diffraction grating /
- phase cont rast method
点击查看大图
计量
- 文章访问数: 2244
- HTML全文浏览量: 150
- PDF下载量: 452
- 被引次数: 0