Three-dimensional optical memory using photoluminescence change in Sm-doped sodium borate glass

Jinhyong Lim; Myeongkyu Lee; Eunkyoung Kim

doi:10.1063/1.1926402

Three-dimensional optical memory using photoluminescence change in Sm-doped sodium borate glass

Jinhyong Lim, Myeongkyu Lee, Eunkyoung Kim

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

The feasibility of three-dimensional (3D) optical memory has been demonstrated by utilizing the photoluminescence (PL) spectrum change in a Sm-doped fluoride glass [K. Miura, J. Qiu, S. Fujiwara, S. Sakasuchi, and K. Hirao, Appl. Phys. Lett. 80 2263 (2002)]. We here report on a femtosecond laser-induced PL change in a Sm-doped sodium borate glass that is easier to synthesize and its potential application to 3D memory. Irradiation with a femtosecond pulsed laser (800 nm, 1 kHz, 100 fs) induced a PL peak near 682 nm, resulting from the photoreduction of the Sm ions. A multilayer pattern (bit size=1 μm,layer separation=8 μm) formed by femtosecond laser irradiation was read out by a reflection-type fluorescent confocal microscope, which detected the emission at 682 nm as a signal. High-contrast pattern images were obtained without crosstalk.

Original language	English
Article number	191105
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	19
DOIs	https://doi.org/10.1063/1.1926402
Publication status	Published - 2005 May 9

Bibliographical note

Funding Information:
This work was supported by the Ministry of Science and Technology of Korea.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1926402

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title = "Three-dimensional optical memory using photoluminescence change in Sm-doped sodium borate glass",

abstract = "The feasibility of three-dimensional (3D) optical memory has been demonstrated by utilizing the photoluminescence (PL) spectrum change in a Sm-doped fluoride glass [K. Miura, J. Qiu, S. Fujiwara, S. Sakasuchi, and K. Hirao, Appl. Phys. Lett. 80 2263 (2002)]. We here report on a femtosecond laser-induced PL change in a Sm-doped sodium borate glass that is easier to synthesize and its potential application to 3D memory. Irradiation with a femtosecond pulsed laser (800 nm, 1 kHz, 100 fs) induced a PL peak near 682 nm, resulting from the photoreduction of the Sm ions. A multilayer pattern (bit size=1 μm,layer separation=8 μm) formed by femtosecond laser irradiation was read out by a reflection-type fluorescent confocal microscope, which detected the emission at 682 nm as a signal. High-contrast pattern images were obtained without crosstalk.",

author = "Jinhyong Lim and Myeongkyu Lee and Eunkyoung Kim",

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AU - Lim, Jinhyong

AU - Lee, Myeongkyu

AU - Kim, Eunkyoung

N1 - Funding Information: This work was supported by the Ministry of Science and Technology of Korea.

PY - 2005/5/9

Y1 - 2005/5/9

N2 - The feasibility of three-dimensional (3D) optical memory has been demonstrated by utilizing the photoluminescence (PL) spectrum change in a Sm-doped fluoride glass [K. Miura, J. Qiu, S. Fujiwara, S. Sakasuchi, and K. Hirao, Appl. Phys. Lett. 80 2263 (2002)]. We here report on a femtosecond laser-induced PL change in a Sm-doped sodium borate glass that is easier to synthesize and its potential application to 3D memory. Irradiation with a femtosecond pulsed laser (800 nm, 1 kHz, 100 fs) induced a PL peak near 682 nm, resulting from the photoreduction of the Sm ions. A multilayer pattern (bit size=1 μm,layer separation=8 μm) formed by femtosecond laser irradiation was read out by a reflection-type fluorescent confocal microscope, which detected the emission at 682 nm as a signal. High-contrast pattern images were obtained without crosstalk.

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Three-dimensional optical memory using photoluminescence change in Sm-doped sodium borate glass

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