Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method

In this study, we devised a method for the design of continuous phase-only holographic masks that map laser light to arbitrary target illumination patterns, which have a wide range of applications. In this method, the discrete gradient of a holographic mask is obtained by combining geometric optics...

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Main Authors: Kuo Shi, Gongjian Zhang
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/9/11/874
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author Kuo Shi
Gongjian Zhang
author_facet Kuo Shi
Gongjian Zhang
author_sort Kuo Shi
collection DOAJ
description In this study, we devised a method for the design of continuous phase-only holographic masks that map laser light to arbitrary target illumination patterns, which have a wide range of applications. In this method, the discrete gradient of a holographic mask is obtained by combining geometric optics and the linear assignment problem (LAP) methods, and then the entire problem is transformed into an integral problem with a discrete gradient. Finally, the least squares method is used to solve the gradient integral to complete the construction of a phase holographic mask. Due to its good continuity, this mask design method can also be applied to the production of diffractive optical elements. We discussed the effectiveness of this method by constructing two holographic masks with uniform illumination. At the same time, we successfully constructed an Einstein face holographic mask with non-uniform illumination using the LAP method for the first time. It is believed that this method can be widely used in illumination mode, ion capture and other directions.
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spelling doaj.art-15d39ae12ece479eb7e98427a81f0ec42023-11-24T09:37:58ZengMDPI AGPhotonics2304-67322022-11-0191187410.3390/photonics9110874Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative MethodKuo Shi0Gongjian Zhang1Department of Opto-Electronic System Engineering, Chitose Institute of Science and Technology, Chitose 066-8655, JapanDepartment of Opto-Electronic System Engineering, Chitose Institute of Science and Technology, Chitose 066-8655, JapanIn this study, we devised a method for the design of continuous phase-only holographic masks that map laser light to arbitrary target illumination patterns, which have a wide range of applications. In this method, the discrete gradient of a holographic mask is obtained by combining geometric optics and the linear assignment problem (LAP) methods, and then the entire problem is transformed into an integral problem with a discrete gradient. Finally, the least squares method is used to solve the gradient integral to complete the construction of a phase holographic mask. Due to its good continuity, this mask design method can also be applied to the production of diffractive optical elements. We discussed the effectiveness of this method by constructing two holographic masks with uniform illumination. At the same time, we successfully constructed an Einstein face holographic mask with non-uniform illumination using the LAP method for the first time. It is believed that this method can be widely used in illumination mode, ion capture and other directions.https://www.mdpi.com/2304-6732/9/11/874linear assignment problem (LAP)phase-only freeformcomputer-generated holography
spellingShingle Kuo Shi
Gongjian Zhang
Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
Photonics
linear assignment problem (LAP)
phase-only freeform
computer-generated holography
title Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
title_full Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
title_fullStr Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
title_full_unstemmed Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
title_short Design and Application of Phase-Only Diffractive Optical Element Based on Non-Iterative Method
title_sort design and application of phase only diffractive optical element based on non iterative method
topic linear assignment problem (LAP)
phase-only freeform
computer-generated holography
url https://www.mdpi.com/2304-6732/9/11/874
work_keys_str_mv AT kuoshi designandapplicationofphaseonlydiffractiveopticalelementbasedonnoniterativemethod
AT gongjianzhang designandapplicationofphaseonlydiffractiveopticalelementbasedonnoniterativemethod