Design and quantitative analysis of diffractive optical element to realize true beam smoothing on an inclined plane

Qiaofeng Tan; Yingbai Yan; Guofan Jin

doi:10.1117/12.568425

8 November 2004 Design and quantitative analysis of diffractive optical element to realize true beam smoothing on an inclined plane

Qiaofeng Tan, Yingbai Yan, Guofan Jin

Author Affiliations +

Proceedings Volume 5636, Holography, Diffractive Optics, and Applications II; (2004) https://doi.org/10.1117/12.568425
Event: Photonics Asia, 2004, Beijing, China

Abstract

Diffractive optical element (DOE) is a proposing technique to realize beam smoothing in inertial confinement fusion (ICF) system. In indirect-driving ICF system, beam smoothing is required on a certain inclined plane non-perpendicular to the optical axis. In this paper, the DOE is designed to be consistent with beam smoothing with long focal depth, which ensures that the beam smoothing can be obtained on the inclined plane. And in the optimization, the sampling interval is chosen as half of the traditional sampling interval, in order to realize true beam smoothing distribution. The simulated results show that the performance of the beam smoothing can be held with any sampling interval on the inclined plane. Finally, the performance of the DOE is quantitatively analyzed. Two parameters, light efficiency and top non-uniformity, are re-defined. These two parameters can truly and exactly evaluate the performance of the DOE, because their definitions can go back to the origin. The simulated results show the validity of the design with long focal depth and half of the traditional sampling interval.

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Qiaofeng Tan, Yingbai Yan, and Guofan Jin "Design and quantitative analysis of diffractive optical element to realize true beam smoothing on an inclined plane", Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (8 November 2004); https://doi.org/10.1117/12.568425

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KEYWORDS

Diffractive optical elements

Optical design

Quantitative analysis

Computer simulations

Near field optics

Fourier transforms

Optical simulations

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