139 resultados para -Er^3
Resumo:
f-f,-(Ferron,7-8-5-),,Ln~(3+)(Pr~(3+)Nd~(3+)Er~(3+))-Ferron,f-f,,
Resumo:
YAG:ErEr~(3+),Er~(3+)(~4S_(3/2),~4F_(9/2)~2H_(11/2)),~4I_(11/2)I_(13/2)
Resumo:
J-OEr_(3x)~(3+):Y_(3-3x)A_5O_(12)Er_x~(3+)Yb_(1-x)P_5O_(14)Er~(3+)_
Resumo:
Er^3+Tm^3+/Yb^3+Raman980nmLD(476nm)(530nm545nm)(656nm)(476nm)Tm^3+1^G43^3H6(530nm545nm)Er^3+2^H11/24^I1524^S3/24^I15/2(6
Resumo:
5OH^-Judd-OfeltOH^-ii=246McCumber1532nmEr^3^4I132^4I15/2Er^3^4I132^4I15/2^4I132OH^-
Resumo:
---(JuddOfelt)Er^3+(McCumber)Er^3+15mEr^3+65nmEr^3+Er^3+--
Resumo:
Er^3/Yb^3. , McCumberEr^31533 nm0.8410^-20 cm^2, ^4I13/28.5 ms. , Er^3/Yb^3. , 80 mW, 16.5%.
Resumo:
Er^3+Er^3+Judd-OfeltEr^3+(2=47910^-20cm^2,4=15210^-20cm^26=06610^-20cm^2)McCumberEr^3+(e=104010^-21cm^2)Er^3+^4I132^4I152(FWHM=655nm)
Resumo:
TgTx3771488552nmMcCumberEr^3+4I132^4I1521532nm09110^-20cm^26328nmAg^+300De28210^-1
Resumo:
Yb^3+-Er^3+P2O5-B2O3-R2O-MO-Al2O3(R=LiNaKM=ZnCaSrBa)B2O3B2O3TgTf
Resumo:
Er^3+Judd-OfeltEr^3+(2=47910^-20cm^24=15210^-20cm^26=06610^-20cm^2)McCumberEr^3+(e=104010^-21cm^2)Er^3+^4I13/2^4I15/2(FWHM=655nm)(^4I13/2rad
Resumo:
A novel Vb(3+)-Er-(3+) codoped phosphate glass for high power flashlamp pumping and high repetition rate laser at 1.54 mu m, designated EAT5-2, is developed. The weight-loss rate of is 1.3 x 10(-5) gcm(-2) h(-1) in boiling water, which is comparable to Kigre's QX-Er glass. Some spectroscopic parameters are analysed by Judd-Ofelt theory and McCumber theory The emission cross section is calculated to be 0.73 x 10(-20) cm(2). The thermo-mechanical properties of EAT5-2 are modified after an ion-exchange chemical strengthening process in a KNO3/NaNO3 molten salt bath. The thresholds for optical damage from the flashlamp pumping are tested on glass rods. A repetition rate of 15 Hz is achieved for chemically strengthened glass. The laser experimental results at. 1.54 mu m from flashlamp pumping are also reported.
Resumo:
Infrared-to-visible upconversion fluorescence of Er(3+)/Yb(3+) co-doped lithium-strontium-lead-bismuth (LSPB) glasses for developing potential upconversion lasers has been studied under 975-nm excitation. Based on the results of energy transfer efficiency and upconversion spectra, the optimal Yb(3+)-Er(3+) concentration ratio is found to be 5:1. Intense green and red emissions centered at 525, 546, and 657 nm, corresponding to the transitions 2H_(11/2)-->4I_(15/2), 4S_(3/2)-->4I_(15/2), and 4F_(9/2)-->4I_(15/2), respectively, were observed. The quadratic dependence of the 525-, 546-, and 657-nm emissions on excitation power indicates that a two-photon absorption process occurs under 975-nm excitation. The high-populated 4I_(11/2) level is supposed to serve as the intermediate state responsible for the upconversion processes. The intense upconversion luminescence of Er(3+)/Yb(3+) co-doped LSPB glasses may be a potentially useful material for developing upconversion optical devices.
