• Title/Summary/Keyword: Radiationless transition

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Optical Properties of $Yb(HFA-D)_3$ Complex for Laser Material (레이저 매질로서의 $Yb(HFA-D)_3$ 착물의 광학적 특성)

  • 김정호;박용필
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2000.11a
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    • pp.129-132
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    • 2000
  • Perdeuterated hexaflouroacetyIacetonato-ytterbium $[Yb(HFA-D)_3]$ complexes were synthesized by the keto-en01 tautomerism reaction of $Yb(HFA-D)_3$ in methanol-$d_4$ in order to reduce the radiationless transition to the ligands. The luminescence properties of $Yb(HFA-D)_3$ complex were measured in the following anhydrous deuterated organic solvents ; Acetone-$d_6$, Methanol -$d_4$, THF-$d_6$, PO$(OHC_3)_3$ and DMSO-$d_6$. The intensity, lifetime and quantum efficiency of the luminescence in DMSO-$d_6$ were superior to those in other deuterated solvents. It was suggested that the anhydrous DMSO-$d_6$ might be the most appropriate solvent for the liquid laser material of $Yb(HFA-D)_3$ complex.

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Development of Laser Material for High Power and High Efficiency (고출력, 고효율 실현을 위한 새로운 레이저매질 개발)

  • 김정호
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.07a
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    • pp.15-18
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    • 2001
  • Perdeuterated hexaflouroacetylacetonato-ytterbium [Yb(SOL)-D)$_3$] complexes were synthesized by the keto-enol tautomerism reaction of Yb(SOL-H)$_3$ in methanol-d$_4$in methanol-d$_4$in order to reduce the radiationless transition to the ligands. The luminescence properties of Yb(SOL-D)$_3$complex were measured in the following anhydrous deuterated organic solvents ; Methanol-d$_4$, THF-d$\sub$8/, PO(OCH$_3$)$_3$ and DMSO-d$\sub$6/. The intensity, lifetime and quantum efficiency of the luminescence in DMSO-d$\sub$6/ were superior to those in other deuterated solvents. It was suggested that the anhydrous DMSO-d$\sub$6/ might be the most appropriate solvent for the liquid laser material of Yb(SOL-D)$_3$ complex.

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Development of Yb(HFA-D)$_3$Complexes for Liquid Laser Material (액체 레이저 매질로서의 신물질 Yb(HFA-D)$_3$착물의 개발)

  • 김정호;박용필
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.13 no.12
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    • pp.1045-1050
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    • 2000
  • Perdeuterated hexaflouroacetylacetonato-ytterbium [Yb(HFA-D)$_3$]complexes were synthesized by the keto-enol tautomerism reaction of Yb(HFA-H$_3$) in methanol-d$_4$in rder to reduct the radiationless transition to the ligands. The luminescence properties of Yb(HFA-D)$_3$complex were measured in the following anhydrous deuterated organic solvents ; Methanol-d$_4$, THF-d$_{8}$, PO(O$CH_3$)$_3$and DMSO-d$_{6}$. The intensity, lifetime and quantum efficiency of the luminescnce in DMSO-d$_{6}$ were superior to those in other deuterated solvents. It was suggested that the anhydrous DMSO-d$_{6}$ might be the most appropriate solvent for the liquid laser material of Yb(HFA-D)$_3$complex.complex.

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Optical Properties of $Yb(HFA-D)_{3}$ Complex for Laser Material (레이저 매질로서의 $Yb(HFA-D)_{3}$ 착물의 광학적 특성)

  • 김정호;박용필
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.11a
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    • pp.129-132
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    • 2000
  • Perdeuterated hexafluoroacetylacetonato -ytterbium [$Yb (HFA -D)$_3$_3$] complexes were synthesized by the koto-enol tautomerism reaction of $Yb(HFA-H)_3$ in methanol-$d_4$, in order to reduce the radiationless transition to the ligands. The luminescence properties of $Yb(HFA-D)_3$ complex were measured in the following anhydrous deuterated organic solvents : Acetone-$d_6$, Methanol-$d_4$, THF-$d_8$, $PO(OC$H_3$)_3$ and DMSO-$d_6$. The intensity, lifetime and quantum efficiency of the luminescence in DMSO-$d_6$ were superior to those in other deuterated solvents. It was suggested that the anhydrous DMSO-d$_{6}$ might be the most appropriate solvent for the liquid laser material of $Yb(HFA-D)_3$ complex.x.

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Development of New Laser Material for High Power and High Efficiency (고출력, 고효율 실현을 위한 새로운 레이저매질 개발)

  • 김정호;박용필
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.14 no.11
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    • pp.928-933
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    • 2001
  • Perdeuterated hexaflouroacetylacetonato-ytterbium [Yb(SOL-D)$_3$] complexes are synthesized by the keto-enol tautomerism reaction of Yb(SOL-H)$_3$ in methanol-d$_4$ in order to reduce the radiationless transition to the ligands for the high power solid state laser material. The luminescence properties of Yb(SOL-D)$_3$ complex are measured in the following anhydrous deuterated organic solvents ; Methanol-d$_4$, THF-d$_{8}$, PO(O$CH_3$)$_3$ and DMSO-d$_{6}$. The Luminescence intensity, lifetime and quantum efficiency in DMSO-d$_{6}$ are superior to those in other deuterated solvents. It is suggested that the anhydrous DMSO-d$_{6}$ might be the most appropriate solvent for the laser material of Yb(SOL-D)$_3$ complex.complex.

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Optical Properties of Yb(SOL-D)$_3$ Complex for Laser Material (신 레이저매질 Yb(SOL-D)$_3$착물의 광학적 특성)

  • 김정호;서연호;박용필
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.07a
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    • pp.640-643
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    • 2001
  • Perdeuterated hexaflouroacetylacetonato-ytterbium [Yb(SOL-D)$_3$] complexes were synthesized by the keto-enol tautomerism reaction of Yb(SOL-H)$_3$in methanol-d$_4$in order to reduce the radiationless transition to the ligands. The luminescence properties of Yb(SOL-D)$_3$complex were measured in the following anhydrous deuterated organic solvents ; Methanol-d$_4$, THF-d$_{8}$, PO(O$CH_3$)$_3$and DMSO-d$_{6}$. The intensity, lifetime and quantum efficiency of the luminescence in DMSO-d$_{6}$ were superior to those in other deuterated solvents. It was suggested that the anhydrous DMSO-d$_{6}$ might be the most appropriate solvent for the liquid laser material of Yb(SOL-D)$_3$complex.complex.

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The Effect of Vibrationally Excited Levels on the Pressure Saturation of the Collisional Quenching of the $^3B_1\;State\;of\;SO_2

  • Bae, S. C.
    • Bulletin of the Korean Chemical Society
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    • v.17 no.1
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    • pp.56-60
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    • 1996
  • The pressure saturation effect on the phosphorescence decay rates of the $^3B_1$ State of $SO_2$ has been reinvestigated by the laser induced phosphorescence method in pure $SO_2$. We have attempted to fit the pressure dependence of the phosphorescence decay rates using the radiationless transition model by introducing different coupling constants for each vibrational level ofthe 3B1 state. The experimental decay rates can be fitted well, when the coupling constants for the (0,0,0), (0,1,0) and (0,2,0) levels of the $^3B_1$ state are $7.2\;{\times}\;10^{-4}$, $2.2\;{\times}\;10^{-3}$ and $5.9\;{\times}\;10^{-3}\;cm^{-1}$, respectively.

Optical properties of $Nd^{3+}$ complexes for liquid laser material (액체 레이저의 매질 개발을 목적으로 한 $Nd^{3+}$ 착물의 광학적 특성)

  • 김정호
    • Korean Journal of Optics and Photonics
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    • v.10 no.4
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    • pp.318-322
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    • 1999
  • Perdeuterated hexaflouroacetylacetonato-neodymium [$Nd(HFA-D)_3$] complexes were synthesized by the keto-enol tautomerism reaction of $Nd(HFA-D)_3$ in methanol-d$_4$ in order to reduce the radiationless transition to the ligands. The emission properties of $Nd(HFA-D)_3$ complex were measured in the following anhydrous deuterated organic solvents; $Methanol-d_4$, $Aceton-d_6$, $THE-d_8$ and $DMSO-d_6$, and these properties depended on the coordination ability of solvent molecules. The intensity and lifetime of the emission in dimethysulfoxide (DMSO-$d_6$) were superior to those in other in other deuterated solvents. It was suggested that the anhydrous $DMSO-d_6$might be the most appropriate solvent for the liquid laser material of $Nd(HFA-D)_3$ complex.

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