68 resultados para Tm^3


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2Tm^3THo^3Er^3294m

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DCJTB18-1DCJTBASEDCJTBPS016mJPulse~(_1)cm-24072cm-1249cml704DCMDCJTB2ASEASEDCJTBPSASEASElordDCJTBTETM3Alq3DCJTBC545TAlq3ASEAlq3Alq3Alq34418-186018

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BSBaF_2BaF_2:CeTSLBaF_2TSL381K402KCeTSLKMgF_3KCaF_3BaLiF_3TSLESRKMgF_3KMgF_3KCaF_3Al~(3+)FBaLiF_3La~3Yb~(3+)FH10~8RadBaLiF_3FAFXESREuEu~(3+)KMgF_3KMgF_3:Eu~(2+)0.29mol%BaLiF_3:Eu~(2+)PSLXBSKMgF_3BaLiF_3XLa~(3+)Tm~(3+)KMgF_3K~+Mg~(2+)SEMH_2SO_4cf KMgF_3BaLiF_3LaF_3:Ce~(3+)Ce~(3+)Ce~(3+)BSCeF_3

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121980MS1990TM2000TM3208045GIS6

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4.(RS)(GIS)3TM,,3.,,,,.().,.9530

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, , , . 198619952 0 0 0 3TM , 3 . , . 19861995 , 2 0 0 0 ; ; , , . , .

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CdSiO_3:RE~(3+)(RE=Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu)XRD10503CdSiO_3Y~(3+),La~(3+),Gd~(3+),Lu~(3+)Ce~(3+),Nd~(3+),Ho~(3+),Er~(3+),Tm~(3+),Yb~(3+)420 nm, Pr~(3+),Sm~(3+),Eu~(3+),Tb~(3+),Dy~(3+),420 nm,

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,(GSH).GSH.Eu~(3+)12.50.1L/mol100.00.5L/mol.~(13)CpHpK_a2.200.023.500.04.Dy~(3+)Ho~(3+)Er~(3+)Tm~(3+) Yb~(3+),GSH~(13)C,,.

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~(13)CDy~(3+)Ho~(3+)Er~(3+)Tm~(3+)Yb~(3+)~(13)C~1H,1

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11(La~(3+)Pr~(3+)Nd~(3+)Eu~(3+)Tb~(3+)Dy~(3+)Ho~(3+)Er~(3+)Tm~(3+)Yb~(3+)Lu~(3+)~(13)C~(1)H,,,Ln~(3+)-O2.1

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7(La~(3+)Pr~(3+)Nd~(3+)Dy~(3+)Ho~(3+)Er~(3+)Tm~(3+))~(13)C,,Ln~(3+)O2.7A,,C_0-C_-C_-C_C_-C_-C_-S,C_-C_-S-C_~1H~(13)C

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We demonstrate passive Q-switching of short-length double-clad Tm3+-doped silica fiber lasers near 2 mu m pumped by a laser diode array (LDA) at 790 nm. Polycrystalline Cr2+:ZnSe microchips with thickness from 0.3 to 1 mm are adopted as the Q-switching elements. Pulse duration of 120 ns, pulse energy over 14 mu] and repetition rate of 53 kHz are obtained from a 5-cm long fiber laser. As high as 530 kHz repetition rate is achieved from a 50-cm long fiber laser at similar to 10-W pump power. The performance of the Q-switched fiber lasers as a function of fiber length is also analyzed. (c) 2008 Elsevier B.V. All rights reserved.

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The near-IR emission spectra of Er3+-Tm3+ codoped 70GeS(2)-20In(2)S(3)-10CsI chalcohalide glasses were studied with an 808 nm laser as an excitation source. A broad emission extending from 1.35 to 1.7 mu m with a FWHM of similar to 160 nm was recorded in a 0.1 mol.% Er2S3, 0.5 mol.% Tm2S3 codoped chalcohalide glass. The fluorescence decay curves of glasses were measured by monitoring the emissions of Tm3+ at 1460 nm and Er3+ at 1540 nm, and the lifetimes were obtained from the first-order exponential fit. The luminescence mechanism and the possible energy-transfer processes are discussed with respect to the energy-level diagram of Er3+ and Tm3+ ions. (C) 2008 Optical Society of America

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We report on cooperative downconversion in Yb3+-RE3+ (RE = Tm or Pr) codoped lanthanum borogermanate glasses (LBG), which are capable of splitting a visible photon absorbed by Tm3+ or Pr3+ ions into two near-infrared photons. The results indicate that Pr3+-Yb3+ is a more efficient ion couple than Tm3+-Yb3+ in terms of cooperative downconversion. We have obtained a highest quantum yield of 165% and 138% for Pr3+-Yb3+ and Tm3+-Yb3+ codoped LBG glasses under 468 nm excitation, respectively. However, ultraviolet light excitation to the charge transfer band of Yb3+ does not result in quantum splitting as rapid relaxation from the charge transfer band to 4f(13) levels of Yb3+ dominates. (C) 2008 Optical Society of America