Design, fabrication, and characterization of circular Dammann gratings based on grayscale lithography.
نویسندگان
چکیده
We describe the design, fabrication, and experimental demonstration of a circular Dammann grating element generating a point-spread function of two concentric rings with equal intensity. The element was fabricated using grayscale lithography, providing a smooth and accurate phase profile. As a result, we obtained high diffraction efficiency and good uniformity between the two rings.
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عنوان ژورنال:
- Optics letters
دوره 35 6 شماره
صفحات -
تاریخ انتشار 2010