982 resultados para Er^3
Resumo:
15Li2O-15Nb2O5-70TeO2-0.1Er2O3-0.4Yb2O3%, , . XXRD, Yb6Te5O19.2Er6Te5O19.2, 55 nm. Judd-OfeltEr^3tt2, 4, 6Er^34I15/24I13/2, McCumber
Resumo:
Judd-OfeltEr^3i=246Er^3Er^3^4I132^4I152Er^3^4I132McCumberEr^3^4I132^4I152
Resumo:
100-XTeO2-XNb2O5X=5101520molJudd-OfeltMcCumbertt=246cmiNb2O575TeO2-20ZnO-5Na2O
Resumo:
Er^3+-TeO2-ZnO-Na2O-Nb2O5TeO2-PbO-B2O3--TgTxHrubysHR=(Tx-Tg)(T1-Tc)(Tx-Tg)TeO2-ZnO-Na2OZnO(Tx-Tg)(10())Nb2O5PbO(Tx-Tg)
Resumo:
Er^3+Er^3+Er^3+cEr^3+Er^3+Er^3+
Resumo:
Cr^3Yb^3Er^3QEr2O3Er2O305wt01Hz145mJ96mJ055Cr14KigreQE-7S
Resumo:
Fluorophosphate glass with 4 mol.% ErF3 content was prepared. The different scanning calorimetry was conducted. Raman spectrum, infrared transmission spectrum, absorption spectrum were measured. Fluorescence spectrum and lifetime of emission around 1.53 mu m were measured under 970 nm laser diode excitation. The metaphosphate content in the composition is limited, but the maximum phonon energy of glass amounts to 1290 cm- 1, and is comparatively high. The full width at half maximum is about 56 nm, and is wider than for most of the materials investigated. The measured lifetime of I-4(13/2) -> I-4(15/2) transition, contributed by the high phonon energy, inefficient interaction of Er3+ ions, and low water content, amounts to no less than 7.36 ms though the Er3+ concentration is high. This work might provide useful information for the development of compact optical devices.
Resumo:
The Er3+/Yb3+ co-doped glasses with compositions of xBi(2)O(3)-(65-x)P2O5-4Yb(2)O(3)-11Al(2)O(3)-5BaO-15Na(2)O (where x = 0, 2.5, 5, 7.5 and 10 mol%) were prepared using the normal melt quench technique. The optical absorption spectra of the glasses were recorded in the wavelength range 300-1700 nm. The effect of Bi2O3 content on the thermal stability and absorption spectra of glasses was investigated. In addition, the Judd-Ofelt parameters and oscillator strengths were calculated by employing Judd-Ofelt theory. It was observed that the positions of the fundamental absorption edge and cut-off wavelength shifted towards red as the content of Bi2O3 increased. However, there were no red shifts found both in the peak wavelength and in the center of mass wavelength of all absorption bands with Bi2O3 content increasing. The results of Judd-Ofelt theory analysis showed that Judd-Ofelt parameters Omega(t), (t = 2, 4, 6) changed sharply when Bi2O3 concentration exceeded 5 mol%. The variation trends of experimental oscillator strength were similar with those of Judd-Ofelt parameters as function of Bi2O3 concentrations. Moreover, differential scanning calorimetry experiments showed that the increases of Bi2O3 content weakened the network structure and then lowered the thermal stability of the glasses. The spontaneous emission probability A(rad), branching ratio beta and the radiative lifetime tau(rad) were also calculated and analyzed. The stimulated emission cross-section of Er3+ was calculated according to the McCumber theory. It was found that the stimulated emission cross-section of Er3+ was monotonically increases with Bi2O3 content increasing. (C) 2006 Elsevier B.V. All rights reserved.
Resumo:
Er^3Yb^34710^-5gcm^-2hr^-1KigreQXErAg^-Li^m-6328nmWKB
Resumo:
Er^3Judd-OfeltK^Sr^212molK^78310^-21cm^223molSr^275810^-21cm^265nm
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Er^3+Yb^3+Er^3+Yb^3+Er^3+1533nm-Er^3+1533nm07210^20cm^2SchottIOG1Er^3+06710^-20cm^2155m
Resumo:
Co^2Er^3Y3Al5O12Er^3Y3Al5O12QCo^2Er^3Y3Al5O12QCo^2Er^3YAGQ
Resumo:
6molXZJudd-OfeltEr^3AJJp
Resumo:
Er^3PbWO4Er^3J-OJ-O2=37510^-20cm^24=06710^-20cm^26=04110^-20cm^2PWOEr^380^4I132^4I1325200sJ-OPWO^4I13/2^4I15/2153mE
Resumo:
Er^3Yb^3La2O3sYb^3Er^35at05ats=965ms
