Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | EPJ Web of Conferences 335 |
| Seitenumfang | 2 |
| Publikationsstatus | Veröffentlicht - 22 Sept. 2025 |
| Veranstaltung | 2025 European Optical Society Annual Meeting, EOSAM 2025 - Delft, Niederlande Dauer: 24 Aug. 2025 → 28 Aug. 2025 |
Publikationsreihe
| Name | EPJ Web of Conferences |
|---|---|
| Herausgeber (Verlag) | EDP Sciences |
| Band | 335 |
| ISSN (Print) | 2101-6275 |
Abstract
Cascaded diffractive optical element (DOE), consisting of multiple DOE layers, is a type of multi-layer architecture that introduces additional design freedom, e.g. rotation angle, wavelength or polarization state, enabling more flexible and precise modulation of light field compared to a single-layer DOE. This enhanced modulation capability endows it with significant potential for applications in the field of information encryption. For this application, the fidelity of image reconstruction is critically important to the performance of the cascaded DOE. In this work, we propose a new cascaded DOE design framework with the integration of an optimized Harvey-s model, enabling larger modulation bandwidth compared to conventional angular spectrum method (ASM), thereby increasing the information capacity of cascaded DOE, as well as the accuracy of reconstructed images. To validate the proposed method, we design a cascaded DOE for four distinct images encryption. The correlation coefficient of decrypted images is improved by 37% compared to the result that used ASM-based design method. Future work includes fabricating the designed DOE using a two-photon polymerization (2PP) technique and verifying its performance experimentally.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Allgemeine Physik und Astronomie
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EPJ Web of Conferences 335. 2025. 02005 (EPJ Web of Conferences; Band 335).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Cascaded diffractive optical element for high-fidelity optical information encryption
AU - Li, Yanqiu
AU - Zheng, Lei
AU - Caspary, Reinhard
AU - Roth, Bernhard
N1 - Publisher Copyright: © The Authors, published by EDP Sciences, 2025.
PY - 2025/9/22
Y1 - 2025/9/22
N2 - Cascaded diffractive optical element (DOE), consisting of multiple DOE layers, is a type of multi-layer architecture that introduces additional design freedom, e.g. rotation angle, wavelength or polarization state, enabling more flexible and precise modulation of light field compared to a single-layer DOE. This enhanced modulation capability endows it with significant potential for applications in the field of information encryption. For this application, the fidelity of image reconstruction is critically important to the performance of the cascaded DOE. In this work, we propose a new cascaded DOE design framework with the integration of an optimized Harvey-s model, enabling larger modulation bandwidth compared to conventional angular spectrum method (ASM), thereby increasing the information capacity of cascaded DOE, as well as the accuracy of reconstructed images. To validate the proposed method, we design a cascaded DOE for four distinct images encryption. The correlation coefficient of decrypted images is improved by 37% compared to the result that used ASM-based design method. Future work includes fabricating the designed DOE using a two-photon polymerization (2PP) technique and verifying its performance experimentally.
AB - Cascaded diffractive optical element (DOE), consisting of multiple DOE layers, is a type of multi-layer architecture that introduces additional design freedom, e.g. rotation angle, wavelength or polarization state, enabling more flexible and precise modulation of light field compared to a single-layer DOE. This enhanced modulation capability endows it with significant potential for applications in the field of information encryption. For this application, the fidelity of image reconstruction is critically important to the performance of the cascaded DOE. In this work, we propose a new cascaded DOE design framework with the integration of an optimized Harvey-s model, enabling larger modulation bandwidth compared to conventional angular spectrum method (ASM), thereby increasing the information capacity of cascaded DOE, as well as the accuracy of reconstructed images. To validate the proposed method, we design a cascaded DOE for four distinct images encryption. The correlation coefficient of decrypted images is improved by 37% compared to the result that used ASM-based design method. Future work includes fabricating the designed DOE using a two-photon polymerization (2PP) technique and verifying its performance experimentally.
UR - http://www.scopus.com/inward/record.url?scp=105019045402&partnerID=8YFLogxK
U2 - 10.1051/epjconf/202533502005
DO - 10.1051/epjconf/202533502005
M3 - Conference contribution
AN - SCOPUS:105019045402
T3 - EPJ Web of Conferences
BT - EPJ Web of Conferences 335
T2 - 2025 European Optical Society Annual Meeting, EOSAM 2025
Y2 - 24 August 2025 through 28 August 2025
ER -