The behavior of chromium ions in forsterite

Yamaguchi, Yasuhide; Yamagishi, Kiyoshi; Nobe, Yukio

doi:10.1016/s0022-0248(07)80085-6

Cited by 43 publications

(12 citation statements)

References 8 publications

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“…In understanding some date see also GeO 4 , and LiScGeO 4 crystals doped with chromium ions has also been the subject of detailed studies [268][269][270][271]. It is possible that lasing chromium has only a four-valence state in these compounds [270][271][272][273][274][275]. The first assured attempt of the theoretical calculation of the manifold energies and the transition probabilities of tetrahedrally coordinated Cr 4+ ions in the two silicate laser crystals Mg 2 SiO 4 and Y 2 SiO 5 by the electronic structure calculation method was done in [120], independently of ligand field theory (see, e.g.…”

Section: Laser Spectroscopic Potential Of Transition Metal Ionsmentioning

confidence: 99%

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

368

236

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After a brief examination of known insulating laser crystals and the stimulated emission channels of their generating activator ions, this article reviews recent advances in the development of novel lasing crystals and ceramics, as well as inorganic and organic nonlinear-laser crystals for χ (3) and cascaded χ (3) ↔ χ (2) frequency converters. Several new modern attractive technologies in the physics and techniques of crystalline lasers are also discussed.Section of the crystal structure of Na3Li (SeO4)

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Section: Laser Spectroscopic Potential Of Transition Metal Ionsmentioning

confidence: 99%

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

368

236

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“…The typical Cr 4+ -doped crystals used for developing femtosecond oscillators are the Cr:YAG [12] (Cr 4+ :Y 3 Al 5 O 12 ) and the Cr:forsterite [13] (Cr 4+ :Mg 2 SiO 4 whose emission and absorption spectra are plotted in Fig. 2 as an example of spectroscopic properties of a Cr 4+ -doped crystal).…”

Section: Cr 4+ -Doped Crystalsmentioning

confidence: 99%

New laser crystals for the generation of ultrashort pulses

Druon

Balembois

Georges

2006

Comptes Rendus. Physique

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“…To increase the concentration of tetravalent Cr 4+ in forsterite:Cr, it seems required to apply a high Cr doping content and a high oxygen partial pressure [5]. The formation of tetravalent Cr 4+ is related also to the concentration of an oxygen vacancy existing in the crystallized forsterite:Cr [6,7].…”

Section: Introductionmentioning

confidence: 99%

Recharging processes of Cr ions in Mg₂SiO₄ and Y₃Al₅O₁₂ crystals under influence of annealing and γ ‐ irradiation

Kaczmarek¹,

Chen

Boulon

2005

Cryst. Res. Technol.

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Recharging processes of chromium ions were investigated for Mg 2 SiO 4 :Mg, Cr single crystals using annealing in O 2 and in air and γ-irradiation, as compare to YAG :Ca, Cr single crystals. The formation of tetravalent Cr ions in the Mg 2 SiO 4 :Mg, Cr is related not only to the initial Cr content in the melt, oxygen partial pressure and O 2-vacancy existing in the crystal, but also to the external field such as γ-irradiation. The additional absorption after γ-irradiation shows the decrease in intensity of the absorption of Cr 3+ and Cr 4+ ions in some part of the spectrum and increase in the other giving evidence on recharging effects between Cr 3+ and Cr 4+. There arises also color centers observed between 380 nm and 570 nm that may participate in energy transfer of any excitation to Cr 4+ giving rise to Cr 4+ emission. Opposite to forsterite crystal, absorption spectrum of YAG:Ca, Cr crystal after γ-irradiation reveals only increase in the absorption of the Cr bands. The observed behavior of the absorption spectrum of YAG:Ca, Cr crystal under influence of γ-irradiation suggests that γ-irradiation ionizes only Cr ions.

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The behavior of chromium ions in forsterite

Cited by 43 publications

References 8 publications

Laser crystals and ceramics: recent advances

Laser crystals and ceramics: recent advances

New laser crystals for the generation of ultrashort pulses

Recharging processes of Cr ions in Mg₂SiO₄ and Y₃Al₅O₁₂ crystals under influence of annealing and γ ‐ irradiation

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The behavior of chromium ions in forsterite

Cited by 43 publications

References 8 publications

Laser crystals and ceramics: recent advances

Laser crystals and ceramics: recent advances

New laser crystals for the generation of ultrashort pulses

Recharging processes of Cr ions in Mg2SiO4 and Y3Al5O12 crystals under influence of annealing and γ ‐ irradiation

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Recharging processes of Cr ions in Mg₂SiO₄ and Y₃Al₅O₁₂ crystals under influence of annealing and γ ‐ irradiation