Ultra-high-resolution greyscale fluorescence images <i>via</i> UV-exposure of thin flexible phosphor films

Riesen, Nicolas; Priest, Craig; Lancaster, David G.; Badek, Kate; Riesen, Hans

doi:10.1039/d2nr02931f

Nanoscale

2023

DOI: 10.1039/d2nr02931f

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Ultra-high-resolution greyscale fluorescence images via UV-exposure of thin flexible phosphor films

Nicolas Riesen

Craig Priest

David G. Lancaster

et al.

Abstract: Thin films of BaFCl:Sm nanocrystals prepared using a polymer binder were used to create fluorescence images. The phosphor films were exposed to a UV-C mercury lamp light source via chromium-coated...

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Cited by 3 publications

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Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Hu,

Guan,

Zheng

et al. 2024

Laser & Photonics Reviews

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Information storage and security are the building blocks of the information age. Optical information storage is a low‐cost, robust, and high‐capacity storage technique. Discovering new optical information storage media and techniques with beyond binary capacity and enhanced security is in demand. Here a beyond‐binary, “burn after read” and rewritable multiplexing optical information storage and encryption method is demonstrated via Ce:YAG trapping states. It is found that the thermo‐luminescence (TL) intensity of Ce:YAG trapping states is writing light power dependent, enabling multi‐gray‐level information storage and encoding.A new strategy to encode multiplexing information in a single pixel, increasing the storage capability is presented. Meanwhile, the burn after read feature protects the data from secondary leakage. This method has wide applications in data storage, anti‐counterfeiting, and encryption.

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Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Hu,

Guan,

Zheng

et al. 2024

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

Multiphoton induced photoreduction in BaFCl: Sm3+ nanocrystals under femtosecond laser field

Zhang

Deng

Cheng

et al. 2023

Journal of Luminescence

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Single femtosecond laser pulse–induced valence state conversion in BaFCl: Sm³⁺ nanocrystals for low-threshold optical storage

Zheng,

Deng,

et al. 2024

Nanophotonics

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Femtosecond laser-induced valence state conversion (VC) in solid materials has attracted significant research attention due to its potential application in ultra-high density optical storage, boasting advantages such as ultra-high recording speed, easy reading, and high signal-to-noise ratio. However, identifying appropriate materials and technological solutions conducive to efficient single-laser-shot recording remains a pivotal challenge for practical applications. In this work, we report single femtosecond laser pulse–induced VC in BaFCl: Sm3+ nanocrystals utilizing a 4F-configuration optical imaging system comprising two-dimensional scan galvo mirrors. For the first time, we experimentally reveal the luminescence mechanisms and channels of multiphoton absorption-induced Sm2+ ions under both single and multiple 800 nm fs laser pulses. Leveraging the highly efficient single femtosecond laser pulse induced VC, we demonstrate a prototype optical storage experiment by sweeping the recording laser pulse. Remarkably, a threshold pulse energy as low as ∼100 nJ for effective single-laser-shot recording in BaFCl: Sm3+ nanocrystals is obtained under the current experimental conditions. Our investigations offer profound insights into the physical mechanisms underlying femtosecond laser induced VC in solid materials, thereby promoting the prospects of VC based optical storage toward practical applications.

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Ultra-high-resolution greyscale fluorescence images via UV-exposure of thin flexible phosphor films

Abstract: Thin films of BaFCl:Sm nanocrystals prepared using a polymer binder were used to create fluorescence images. The phosphor films were exposed to a UV-C mercury lamp light source via chromium-coated...

Cited by 3 publications

References 23 publications

Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Multiphoton induced photoreduction in BaFCl: Sm3+ nanocrystals under femtosecond laser field

Single femtosecond laser pulse–induced valence state conversion in BaFCl: Sm³⁺ nanocrystals for low-threshold optical storage

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Ultra-high-resolution greyscale fluorescence images via UV-exposure of thin flexible phosphor films

Abstract: Thin films of BaFCl:Sm nanocrystals prepared using a polymer binder were used to create fluorescence images. The phosphor films were exposed to a UV-C mercury lamp light source via chromium-coated...

Cited by 3 publications

References 23 publications

Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Burn After Read: A Rewritable Multiplexing Optical Information Storage and Encryption Method

Multiphoton induced photoreduction in BaFCl: Sm3+ nanocrystals under femtosecond laser field

Single femtosecond laser pulse–induced valence state conversion in BaFCl: Sm3+ nanocrystals for low-threshold optical storage

Contact Info

Product

Resources

About

Single femtosecond laser pulse–induced valence state conversion in BaFCl: Sm³⁺ nanocrystals for low-threshold optical storage