139 resultados para -Er^3
Resumo:
Er3+-doped TeO2-based oxysulfide glasses have been prepared in argon atmosphere in carbon crucibles. The thermal analysis and spectroscopic properties of Er (3+) have been considered in terms of sulfide influence. As a function of composition, we have principally measured optical absorption, spontaneous emission and lifetime measurements. Judd-Ofelt theory was introduced to calculate bandwidth and emission cross-section. The results show the product FVMM x sigma(c) increase from 476.8 8 to 635.04 10(-21) cm(2) nm evidently with the addition of 10 mol% PbS into tellurite glass, which indicates a perfect effect on spectra property of Er3+ ions. (C) 2004 Elsevier B.V. All rights reserved.
Resumo:
A novel diffractive-pumping scheme is proposed to improve the evanescent amplification using blazed fiber grating for the first time. We also investigate the cw-pumped-evanescent amplification at 1.55 mu m wavelength with the relative optical gain pumped at 1480 nm of around 2 dB based on side-polished fiber with the effective interaction length as long as 16 mm and with a heavily Er3+-doped (N-Er(3+) > 1.19 x 10(21) ions/cm(3)), low refractive index (n(1550) < 1.47) glass overlay, which has no concentration quenching (tau(f) = 9.0 ms).
Resumo:
A new Er(3+)/Yb(3+) co-doped phosphate glass has been prepared, which exhibits good chemical durability and spectralproperties. Planar graded index waveguides have been fabricated in the glass by (Ag+)-Na(+) ion exchange in a mixed melt of silver nitrate and potassium nitrate. Ion exchange is carried out by varying the process parameters such as temperature, diffusion time, and molten salt compositions. The diffusion parameters, diffusion coefficients, and activation energy are determined by the guidelines of fabricated waveguides, which are determined by the input prism coupling technique.
Characterization of Er3+-doped Na2O-WO3-TeO2 glass for ion-exchanged waveguide amplifiers and lasers
Resumo:
Er^(3+)-doped Na2O-WO3-TeO2 glass consistent with standard ion-exchange technology has been fabricated and characterized. The measured absorption and emission spectra of the glass were analyzed by the Judd-Ofelt and McCumber theories. The intensity parameters are 2 = 7.01
Resumo:
Na2ONa2O-Al2O3-SiO2(NAS)Judd-Ofelt(J-O)Er^3+ttNa2OEr^3+^4I13 2(FWHM)Na2OJ-Ot(t=246)Er^3+1533nmEr^3+^4I13 2E
Resumo:
Er^3Er^3PbF2Er^3Er^3Yb^3Er^3Er^3
Resumo:
2Tm^3THo^3Er^3294m
Resumo:
Sr_2CeO_4Sr_2CeO_4Sr_2CeO_4CeO_6CeOCeOCeCe-O, 0.1A Ce-OO Cef1 M-O2 3 Sr_2ZrO_4Sr_2ZrO_4Sr_2CeO_4X Sr_2ZrO_4ZrO_6Sr_2CeO_4Sr_2ZrO_4BaCaSr_2CeO_4Sr_2ZrO_4Eu~(3+)Er~(3+)
Resumo:
La, Ce, PrNa~([37,38,174])La~([174])IIILn~(3+)(Pr~(3+),Nd~(3+),Er~(3+))-Ferron7--8--5--f-fLn~(3+)-Ferron-TritonX-100Ln(Pr,Nd,Er)
Resumo:
LnMsbO_6Ln_2M_2O_7 (M = Zr, Ti)LnMsbO_6Ln_2M_2O_7(M = Zr, Ti, Ln = La - Yb, YCePm)x-rayLnZrsbO_6x-rayEu~(3+)LnMsbO_6Ln_2M_2O_7Ln_2M_2O_7Z/(d~2) (Zd)Z/(d~2)Ln_2M_2O_7(M = Zr, Ti)LnMsbO_6(M = Zr, Ti)Ln_2M_2O_7(M = Zr, Ti)LnMsbO_6Ln_2M_2O_7Van VleckEu~(3+)Eu~(3+)Ln_2M_2O_7Ln~(3+)D_(3d)~5D_0 ~7F_2610nmEu~(3+)~5D_0 ~7F_1590nmEu~(3+)~5D_0 ~7F_2La~(3+)La_2Ti_2O_7:EuEu~(3+)~5D_0~7F_0La~(3+)LnZrsbO_6:EuEu~(3+)~5D_13~5D_1Ln_2Zr_2O_7LnZrsbO_6Eu~(3+)Bi~(3+)Eu~(3+)Y_2M_2O_7:Bi, BuBi~(3+)Eu~(3+)YMsbO_6:Bi, EuEu~(3+)La~(3+)HoefdraadDy~(3+)LnMsbO_6Ln_2M_2O_7Dy~(3+)~4F_(9/2) ~6H_(15/2)(480nm)~4F_(9/2) ~6H_(13/2)(580nm)RR1Dy~(3+)Ln_2Zr_2O_7LnZrsbO_6 (Ln = Y, Gd, La)Dy~(3+)Eu~(3+)Y_2M_2O_7YMsbO_6 (M = Zr, Ti)Sm~(3+)Sm~(3+)Y_2Ti_2O_7D_(3d)Y~(3+)~4G_(5/2) ~6H_(9/2) (650nm)YZrsbO_6H_0~(3+)Er~(3+)Eu~(3+)Dy~(3+)Y_2Zr_2O_7:EuLa_2Zr_2O_7:EuLn_2Zr_2O_7:Dy (Ln = La, Y)Ln_2Zr_2O_7:Eu
Resumo:
x-(1) ErCl_3 + C_6H_5CH_2C_5H_4Na (THF) C_6H_5CH_2C_5H_4ErCl_23THF + NaCl; (2)GuCl_3nTHF + C_9H_7K (THF) C_9H_7GuCl_23THF + Kcl; C_6H_5CH_2C_5H_4ErCl_23THFDMEEt_2OC_6H_5CH_2C_5H_4ErCl_23THF1600cm~(-1)1490cm~(-1)1450cm~(-1)700cm~(-1)2980cm~(-1)2880cm~(-1)CH_21600cm~(-1)1040cm~(-1)860cm~(-1)1060cm~(-1)910cm~(-1)460cm~(-1)Ln-ClIP21/na = 11.622A. b = 10.281A, c = 26.040A. = 86.65V = 3106.09AE = 4LR = 0.050Er~(3+)8C_9H_(17)GdCl_23THF1050cm~(-1), 900cm~(-1)845cm~(-1)1020cm~(-1)GuCl460cm~(-1)IIP21a = 10.468A, b = 11.888A, c = 11.854A, = 108.46, D = 1399.3A~3R = 0.042Gd-C2.739Gd-O2.444AGd-Cl2.583A2.721ACl(1)-Gd-Cl(2)158.0Cl(1)-Er-Cl(2)156.3C_9H_7GdCl_23THF158.0
Resumo:
IIIIIIN_(1923)IIIIIIHEHEHPIII1(N1923H)_2SO_4La(III)Fe(III)La~(3+),Fe~(3+),N1923,H~+,SO_4~(2-)(N1923H)_2SO_4La(III)Fe(III)2HEHEHPHCLNaCl-NaNO_3Er(III)Er~(3+)HEHEHPNO_3~-CL~-H~+HEHEHPEr(III)NO_3~-NaNO_33HEHEHPN1923Er(III)Er~(3+)HEHEHPN1923CL~-H~+HEHEHPEr(III)N1923N1923N19234HEHEHPHCl-NaCl-KSCNEr(III)Er~(3+)HEH(EHP) CL~-SCN~-H~+HEHEHPErIIIKSCN
