Modified monomer diffusion model for volume holographic grating formation in photopolymers

Ma, Jianshe; Wu, Taihui; Cui, Yao; Li, Jing; Wang, Jing; Su, Ping

doi:10.1364/ao.388633

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The pixel of this system is 1920 × 1080, the gray level is 256, the panel size is 15.36 mm × 8.64 mm, the pixel size is 8.0 μm. In recent years, photopolymers have attracted more and more attention in holographic applications due to their good characteristics, such as high diffraction efficiency, large information storage density, high resolution, and low requirements for physical or chemical processing [ 31 , 32 ]. For the selection of photopolymers, the CRT20 holographic film from Litiholo (Newport News, VA, USA) is used.…”

Section: Cgh Printing Of Large Encrypted Qr Codementioning

confidence: 99%

Optical Encryption Based on Computer Generated Holograms in Photopolymer

Wang

et al. 2021

Polymers

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An optical encryption method based on computer generated holograms printing of photopolymer is presented. Fraunhofer diffraction is performed based on the Gerchberg-Saxton algorithm, and a hologram of the Advanced Encryption Standard encrypted Quick Response code is generated to record the ciphertext. The holograms of the key and the three-dimensional image are generated by the angular spectrum diffraction algorithm. The experimental results show that large-size encrypted Quick Response (QR) code and miniature keys can be printed in photopolymers, which has good application prospects in optical encryption. This method has the advantages of high-density storage, high speed, large fault tolerance, and anti-peeping.

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Section: Cgh Printing Of Large Encrypted Qr Codementioning

confidence: 99%

Optical Encryption Based on Computer Generated Holograms in Photopolymer

Wang

et al. 2021

Polymers

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3D Measurements and Characterizations of Refractive Index Distributions of Volume Holographic Gratings Using Low‐Coherence Holotomography

Jo,

Baek,

Hugonnet

et al. 2024

Advanced Optical Materials

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Holographic Optical Elements (HOEs) employ refractive index (RI) modulation to manipulate light, establishing their widespread application in augmented and virtual reality technologies. Despite significant strides in HOEs' fabrication, a comprehensive 3D examination and measurement of these elements remain largely unexplored. This study targets this void by conducting an in‐depth exploration of the 3D RI distributions of volume holographic gratings (VHGs), a quintessential representative of HOEs. Direct tomographic measurements of the 3D RI distributions within millimeter‐scale VHGs are performed at a spatial resolution of 156 nm × 156 nm × 1.2 µm and an RI precision of 2×10−4. This level of precision facilitates a systematic high‐resolution characterization of VHGs. The findings present a substantial evolution from traditional measurement techniques and promise to considerably advance the evaluation of intricate HOE structures and refine the corresponding fabrication processes.

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Modified monomer diffusion model for volume holographic grating formation in photopolymers

Cited by 2 publications

References 26 publications

Optical Encryption Based on Computer Generated Holograms in Photopolymer

Optical Encryption Based on Computer Generated Holograms in Photopolymer

3D Measurements and Characterizations of Refractive Index Distributions of Volume Holographic Gratings Using Low‐Coherence Holotomography

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