Azo-carbazole copolymer-based composite films with high optical transparency for updatable holograms

Kinashi, Kenji; Nakanishi, Ikumi; Sakai, Wataru; Tsutsumi, Naoto; Jackin, Boaz Jessie

doi:10.1039/d2nj05779d

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…The photo-birefringent material used in our experiment is an azo-carbazole copolymer, which is synthesized in our lab. 17,18 The hologram in this polymer film is recorded with a laser of wavelength 532nm and reconstructed with a laser of wavelength 640nm. We chose the Bessel-Gauss beam for the discussion here, but the method applies to any vector beams, such as vector-vortex, vector-Airy, etc.…”

Section: Methodsmentioning

confidence: 99%

Azo-functionalized copolymer holograms for efficient generation of vector beams

Jackin,

Singh,

Kinashi

et al. 2024

Complex Light and Optical Forces XVIII

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In this paper, we introduce a simplified technique for the generation of vector beams employing polarization holograms recorded on azo-functionalized copolymer film. The method involves recording two holograms sequentially on the same area of the sample using an interferometer setup. After recording, simply illuminating the hologram with a Gaussian beam from a laser produces a vector beam. By rotating the polarization state of the reading beam, different vector beams on the higher-order Poincare sphere (HOPS) can be generated. This technique is simple, compact, and scalable and holds promising potential in optical information processing applications.

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Section: Methodsmentioning

confidence: 99%

Azo-functionalized copolymer holograms for efficient generation of vector beams

Jackin,

Singh,

Kinashi

et al. 2024

Complex Light and Optical Forces XVIII

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“…The multiplexing techniques are employed on the azo-carbazole polymer film synthesized in our lab, which shows very high diffraction efficiency and long retention time for polarization holograms. [22][23][24][25][26][27] The hologram is recorded at 20°angle (angle between object and reference beam), and the recorded hologram falls in the category of Bragg Hologram.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient polarization and angular multiplexed vector hologram

Singh,

Kinashi,

Tsutsumi

et al. 2024

Practical Holography XXXVIII: Displays, Materials, and Applications

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High-density polarization multiplexed holograms using azo-carbazole films for diverse applications

Singh,

Kinashi,

Tsutsumi

et al. 2024

Opt. Express

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In this study, we have demonstrated diverse applications of high-density polarization multiplexed holograms in an azo-carbazole polymer film. We investigate three distinct multiplexing methods, namely i) hybrid polarization-angular multiplexing for high-density data storage, ii) hybrid spatial-polarization multiplexing for a dynamic display, and iii) hybrid polarization-depth multiplexing for depth selective 3D display. Up to 24 images were successfully recorded and then retrieved individually from a single hologram without any cross-talk, using the first multiplexing scheme. Similarly, by employing the second multiplexing scheme, six new images were composed (reconstructed) from a hologram recorded with elemental patterns. Finally, images that can be selectively reconstructed at different depths have been demonstrated using the third multiplexing scheme. In this paper, up to three data recordings at one position in the thin azo-carbazole polymer film are demonstrated for the first time to the best of our knowledge. Our findings underscore the suitability of azo-carbazole copolymer-based composite films for various applications, spanning data storage and display technologies.

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Azo-carbazole copolymer-based composite films with high optical transparency for updatable holograms

Abstract: The development of materials with high diffraction efficiency, fast response time, holographic gratings with optical preservation stability, and long-term optical transparency are key for the practical application of updatable holograms....

Cited by 6 publications

References 39 publications

Azo-functionalized copolymer holograms for efficient generation of vector beams

Azo-functionalized copolymer holograms for efficient generation of vector beams

Highly efficient polarization and angular multiplexed vector hologram

High-density polarization multiplexed holograms using azo-carbazole films for diverse applications

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