Diffractive optical element used to control side lobe to be extremely low in a large region |
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Authors: | Qiaofeng Tan Yingbai Yan Guofan Jin |
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Institution: | State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, PR China |
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Abstract: | In this paper, a diffractive optical element (DOE) is adopted to control the side lobe to be extremely low in a large region on the focal plane, and simultaneously the intensity of the center point on the focal plane is required to be maximal. The DOE to realize the before-mentioned performance is two-phase distributed, i.e. 0 and π. Linear programming is applied to design the DOEs to realize an extremely low side lobe in different regions on the focal plane. Simulated results show that the more rigorous the side lobe is controlled to be, the smaller the intensity of the center point on the focal plane. |
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Keywords: | Diffractive optical element Side lobe Global optimization Linear programming |
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