Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure

M Yamaga, E Hayashi, N Kodama, K Itoh, S Yabashi, Y Masui, S Ono, N Sarukura, T P J Han, Hugh Gerald Gallagher

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

X-ray diffraction of Ce3+-doped SrMgF4 (SMF:Ce) crystals shows a superlattice structure, reflecting the distribution of Ce3+ polyhedra centres observed in optical experiments. Optical absorption bands and fluorescence bands from the Ce3+ polyhedra centres overlap in the vacuum ultraviolet (VUV) and ultraviolet (UV) regions, respectively, so that wide pumping and tuning ranges are expected for laser operation. The SMF: Ce crystals, as well as the isomorphous BaMgF4, are candidates for a tunable laser gain material with nonlinear properties. The optical absorption, excitation, and fluorescence bands observed in the SMF: Ce crystals at low temperatures are ascribed to five distinct fluorescent centres. Three centres have well-known Ce3+ optical characters, for example, fluorescence with double peaks separated by 2000 cm(-1) and five resolved absorption/excitation bands. These centres are assigned to Ce3+-polyhedra classified by weak and strong crystal fields as a consequence of the superlattice structure. The other two fluorescence bands observed in the visible region have 1.5-2 times larger linewidths than those of the former three bands. These bands are interpreted as optical transitions from complexes consisting of Ce3+ and one or two electrons trapped at a vacancy of the nearest neighbour F-ligand ions.

LanguageEnglish
Pages6033-6044
Number of pages12
JournalJournal of Physics: Condensed Matter
Volume18
Issue number26
DOIs
Publication statusPublished - 5 Jul 2006

Fingerprint

vacuum spectroscopy
ultraviolet spectroscopy
Ultraviolet spectroscopy
Fluorescence
Vacuum
Crystals
Light absorption
polyhedrons
fluorescence
Pumping (laser)
Laser tuning
Optical transitions
Linewidth
optical absorption
Vacancies
Absorption spectra
crystals
Tuning
absorption spectra
Ligands

Keywords

  • photochromic centers
  • crystals
  • fluoride
  • lasers
  • irradiation

Cite this

Yamaga, M., Hayashi, E., Kodama, N., Itoh, K., Yabashi, S., Masui, Y., ... Gallagher, H. G. (2006). Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure. Journal of Physics: Condensed Matter, 18(26), 6033-6044. https://doi.org/10.1088/0953-8984/18/26/021
Yamaga, M ; Hayashi, E ; Kodama, N ; Itoh, K ; Yabashi, S ; Masui, Y ; Ono, S ; Sarukura, N ; Han, T P J ; Gallagher, Hugh Gerald. / Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure. In: Journal of Physics: Condensed Matter. 2006 ; Vol. 18, No. 26. pp. 6033-6044.
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abstract = "X-ray diffraction of Ce3+-doped SrMgF4 (SMF:Ce) crystals shows a superlattice structure, reflecting the distribution of Ce3+ polyhedra centres observed in optical experiments. Optical absorption bands and fluorescence bands from the Ce3+ polyhedra centres overlap in the vacuum ultraviolet (VUV) and ultraviolet (UV) regions, respectively, so that wide pumping and tuning ranges are expected for laser operation. The SMF: Ce crystals, as well as the isomorphous BaMgF4, are candidates for a tunable laser gain material with nonlinear properties. The optical absorption, excitation, and fluorescence bands observed in the SMF: Ce crystals at low temperatures are ascribed to five distinct fluorescent centres. Three centres have well-known Ce3+ optical characters, for example, fluorescence with double peaks separated by 2000 cm(-1) and five resolved absorption/excitation bands. These centres are assigned to Ce3+-polyhedra classified by weak and strong crystal fields as a consequence of the superlattice structure. The other two fluorescence bands observed in the visible region have 1.5-2 times larger linewidths than those of the former three bands. These bands are interpreted as optical transitions from complexes consisting of Ce3+ and one or two electrons trapped at a vacancy of the nearest neighbour F-ligand ions.",
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Yamaga, M, Hayashi, E, Kodama, N, Itoh, K, Yabashi, S, Masui, Y, Ono, S, Sarukura, N, Han, TPJ & Gallagher, HG 2006, 'Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure' Journal of Physics: Condensed Matter, vol. 18, no. 26, pp. 6033-6044. https://doi.org/10.1088/0953-8984/18/26/021

Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure. / Yamaga, M ; Hayashi, E ; Kodama, N ; Itoh, K ; Yabashi, S ; Masui, Y ; Ono, S ; Sarukura, N ; Han, T P J ; Gallagher, Hugh Gerald.

In: Journal of Physics: Condensed Matter, Vol. 18, No. 26, 05.07.2006, p. 6033-6044.

Research output: Contribution to journalArticle

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T1 - Vacuum ultraviolet spectroscopy of Ce3+-doped SrMgF4 with superlattice structure

AU - Yamaga, M

AU - Hayashi, E

AU - Kodama, N

AU - Itoh, K

AU - Yabashi, S

AU - Masui, Y

AU - Ono, S

AU - Sarukura, N

AU - Han, T P J

AU - Gallagher, Hugh Gerald

PY - 2006/7/5

Y1 - 2006/7/5

N2 - X-ray diffraction of Ce3+-doped SrMgF4 (SMF:Ce) crystals shows a superlattice structure, reflecting the distribution of Ce3+ polyhedra centres observed in optical experiments. Optical absorption bands and fluorescence bands from the Ce3+ polyhedra centres overlap in the vacuum ultraviolet (VUV) and ultraviolet (UV) regions, respectively, so that wide pumping and tuning ranges are expected for laser operation. The SMF: Ce crystals, as well as the isomorphous BaMgF4, are candidates for a tunable laser gain material with nonlinear properties. The optical absorption, excitation, and fluorescence bands observed in the SMF: Ce crystals at low temperatures are ascribed to five distinct fluorescent centres. Three centres have well-known Ce3+ optical characters, for example, fluorescence with double peaks separated by 2000 cm(-1) and five resolved absorption/excitation bands. These centres are assigned to Ce3+-polyhedra classified by weak and strong crystal fields as a consequence of the superlattice structure. The other two fluorescence bands observed in the visible region have 1.5-2 times larger linewidths than those of the former three bands. These bands are interpreted as optical transitions from complexes consisting of Ce3+ and one or two electrons trapped at a vacancy of the nearest neighbour F-ligand ions.

AB - X-ray diffraction of Ce3+-doped SrMgF4 (SMF:Ce) crystals shows a superlattice structure, reflecting the distribution of Ce3+ polyhedra centres observed in optical experiments. Optical absorption bands and fluorescence bands from the Ce3+ polyhedra centres overlap in the vacuum ultraviolet (VUV) and ultraviolet (UV) regions, respectively, so that wide pumping and tuning ranges are expected for laser operation. The SMF: Ce crystals, as well as the isomorphous BaMgF4, are candidates for a tunable laser gain material with nonlinear properties. The optical absorption, excitation, and fluorescence bands observed in the SMF: Ce crystals at low temperatures are ascribed to five distinct fluorescent centres. Three centres have well-known Ce3+ optical characters, for example, fluorescence with double peaks separated by 2000 cm(-1) and five resolved absorption/excitation bands. These centres are assigned to Ce3+-polyhedra classified by weak and strong crystal fields as a consequence of the superlattice structure. The other two fluorescence bands observed in the visible region have 1.5-2 times larger linewidths than those of the former three bands. These bands are interpreted as optical transitions from complexes consisting of Ce3+ and one or two electrons trapped at a vacancy of the nearest neighbour F-ligand ions.

KW - photochromic centers

KW - crystals

KW - fluoride

KW - lasers

KW - irradiation

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DO - 10.1088/0953-8984/18/26/021

M3 - Article

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SP - 6033

EP - 6044

JO - Journal of Physics: Condensed Matter

T2 - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 26

ER -