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Research On Growth And Properties Of RE: KYbW Self-Activated Laser Crystals

Posted on:2010-03-19Degree:MasterType:Thesis
Country:ChinaCandidate:L C ZhaoFull Text:PDF
GTID:2121360275999405Subject:Inorganic Chemistry
Abstract/Summary:PDF Full Text Request
Tm3+,Ho3+ ion are widely used in medical and optical communication because it can launch lasers about 2.0μm.Thulium-doped potassium ytterbium tungstate crystal (Tm:KYb(WO4)2,abbreviated Tm:KYbW) and thulium,Holmium co-doped potassium ytterbium tungstate crystal(Tm:Ho:KYb(WO4)2,abbreviated Tm:Ho:KYbW) are two kinds of new solid laser materials which are apt to LD pump.About the Tm:KYbW and Tm:Ho:KYbW crystals are not reported now.In this paper,Tm:KYbW and Tm:Ho:KYbW crystal grown by Top Seeded Solvent Growth(TSSG) method,using K2W2O7 as flux.The rational temperature field,the method of material preparation and technological parameters has been designed through further explore of more experiments.X-ray powder diffraction analysis was given.Tm:Ho:KYbW and Tm:KYbW belong to monoclinic system with space group C2/c.The lattice parameters were calculated.The Infrared spectrum and Raman spectrum of crystals were measured.The vibration modes were analyzed and the existence of WOW and WOOW can be insured. Absorption spectrum of the sample was measured,Yb3+ existed two strong peaks at 945nm and 958nm respectively and the absorption cross section wasσ=1.923×10-19cm2 at the half-peak width which were 91nm at 958nm.The absorption spectrum of Tm:Ho:KYbW was analyzed,the corresponding spectral parameters were calculated.Fluorescence spectrum of the Tm:KYbW crystal was measured and the emission linewidth(FWHM) 146nm at the main peek 1759nm was gained.
Keywords/Search Tags:Tm:KYbW crystal, Tm:Ho:KYbW crystal, TSSG, absorption spectrum, fluorescence spectrum
PDF Full Text Request
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