Femtosecond laser-induced reduction in Eu-doped sodium borate glasses

Ki Soo Lim; Sunkyun Lee; Minh Tuan Trinh; Suk Ho Kim; Myeongkyu Lee; Douglas S. Hamilton; George N. Gibson

doi:10.1016/j.jlumin.2006.01.067

Femtosecond laser-induced reduction in Eu-doped sodium borate glasses

Ki Soo Lim, Sunkyun Lee, Minh Tuan Trinh, Suk Ho Kim, Myeongkyu Lee, Douglas S. Hamilton, George N. Gibson

Department of Materials Science and Engineering

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

33 Citations (Scopus)

Abstract

In this work, we report permanent reduction of Eu³⁺ to Eu²⁺ in sodium borate glasses by irradiation of near-infrared femtosecond laser. Glass composition of sodium borate was 85B₂O₃-15Na₂O. The glasses were doped with 0.05, 0.1, and 0.5 mol% Eu₂O₃. Absorption and fluorescence dynamics were studied to investigate valence state change of europium ions and the energy transfer between Eu²⁺ and Eu³⁺ ions. As the femtosecond laser intensity or exposure time increases, the emission band at 400 nm becomes stronger. However, the photoreduction efficiency decreases as the dopant concentration increases. We discuss the photoreduction mechanism under multiphoton absorption.

Original language	English
Pages (from-to)	14-16
Number of pages	3
Journal	Journal of Luminescence
Volume	122-123
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jlumin.2006.01.067
Publication status	Published - 2007 Jan

Bibliographical note

Funding Information:
This work was supported by Korea Research Foundation Grant (KRF-2003-042-C00046).

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
Chemistry(all)
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.jlumin.2006.01.067

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title = "Femtosecond laser-induced reduction in Eu-doped sodium borate glasses",

abstract = "In this work, we report permanent reduction of Eu3+ to Eu2+ in sodium borate glasses by irradiation of near-infrared femtosecond laser. Glass composition of sodium borate was 85B2O3-15Na2O. The glasses were doped with 0.05, 0.1, and 0.5 mol% Eu2O3. Absorption and fluorescence dynamics were studied to investigate valence state change of europium ions and the energy transfer between Eu2+ and Eu3+ ions. As the femtosecond laser intensity or exposure time increases, the emission band at 400 nm becomes stronger. However, the photoreduction efficiency decreases as the dopant concentration increases. We discuss the photoreduction mechanism under multiphoton absorption.",

author = "Lim, {Ki Soo} and Sunkyun Lee and Trinh, {Minh Tuan} and Kim, {Suk Ho} and Myeongkyu Lee and Hamilton, {Douglas S.} and Gibson, {George N.}",

note = "Funding Information: This work was supported by Korea Research Foundation Grant (KRF-2003-042-C00046).",

year = "2007",

month = jan,

doi = "10.1016/j.jlumin.2006.01.067",

language = "English",

volume = "122-123",

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AU - Lim, Ki Soo

AU - Lee, Sunkyun

AU - Trinh, Minh Tuan

AU - Kim, Suk Ho

AU - Lee, Myeongkyu

AU - Hamilton, Douglas S.

AU - Gibson, George N.

N1 - Funding Information: This work was supported by Korea Research Foundation Grant (KRF-2003-042-C00046).

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AB - In this work, we report permanent reduction of Eu3+ to Eu2+ in sodium borate glasses by irradiation of near-infrared femtosecond laser. Glass composition of sodium borate was 85B2O3-15Na2O. The glasses were doped with 0.05, 0.1, and 0.5 mol% Eu2O3. Absorption and fluorescence dynamics were studied to investigate valence state change of europium ions and the energy transfer between Eu2+ and Eu3+ ions. As the femtosecond laser intensity or exposure time increases, the emission band at 400 nm becomes stronger. However, the photoreduction efficiency decreases as the dopant concentration increases. We discuss the photoreduction mechanism under multiphoton absorption.

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Femtosecond laser-induced reduction in Eu-doped sodium borate glasses

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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