Volume 17, Issue 8 2300016
Research Article

Electron Trapping Optical Storage Using A Single-Wavelength Light Source for Both Information Write-In and Read-Out

Chuan Liao

Chuan Liao

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049 China

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Hao Wu

Hao Wu

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

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Huajun Wu

Huajun Wu

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

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Liangliang Zhang

Liangliang Zhang

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

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Guo-hui Pan

Guo-hui Pan

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

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Zhendong Hao

Zhendong Hao

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

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Feng Liu

Corresponding Author

Feng Liu

Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun, 130024 China

E-mail: [email protected]; [email protected]

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Xiao-jun Wang

Xiao-jun Wang

Department of Physics, Georgia Southern University, Statesboro, Georgia, 30460 USA

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Jiahua Zhang

Corresponding Author

Jiahua Zhang

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun, 130033 China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049 China

E-mail: [email protected]; [email protected]

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First published: 08 April 2023
Citations: 12

Abstract

In conventional electron trapping optical storage phosphor, both short- and long-wavelength light are needed for information write-in and read-out, respectively, complicating the optical storage system. Here, a Y3Al2Ga3O12:Pr3+,Eu3+ optical storage phosphor with Pr3+ as an electron donor and Eu3+ as an electron trap is designed, and a single wavelength write-read scheme is demonstrated, which employs the same blue laser diode (LD) light source for both optical write-in through two-photon up-conversion charging and for read-out based on photostimulated luminescence (PSL), originated from 4f15d1→4f2 transition of Pr3+ peaked at 315 nm in UV region. A deep electron trap with the mean depth of 1.42 eV and a narrow distribution of 0.3 eV is observed in the presence of Eu3+ in Y3Al2Ga3O12:Pr3+, implying its long-term storage potential. The write-in and read-out experiments are conducted using 450 nm blue LD light with the power density of 1 W cm−2 for write-in and that with a low power density of 0.02 W cm−2 for read-out in order to avoid the effect of up-conversion luminescence on PSL signal. These results will advance the electron trapping optical storage scheme.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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