Studied on Characteristics of Mg (4.5 Mol%)-Doped LiNbO3 Crystal Using Li Vapor Transport Equilibration

Li Zhu Zhang; Ping Rang Hua

doi:10.4028/www.scientific.net/AMR.785-786.706

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 785-786Studied on Characteristics of Mg (4.5 Mol%)-Doped...

Studied on Characteristics of Mg (4.5 Mol%)-Doped LiNbO₃ Crystal Using Li Vapor Transport Equilibration

Abstract:

It is studied that influence of Li vapor transport equilibration (VTE) on surface refractive index of congruent Mg (4.5 mol%):LiNbO₃ crystal at wavelength of 1536 nm. The results show the ordinary index n_o decreases when t < 40 h, then recoveries slightly and tends to a constant when t >100 h. The extraordinary index n_e has the VTE effects as similar as n_o, but the alteration amplitude is smaller than n_o. The secondary ion mass spectrometry) study shows that the VTE induces Mg diffusion within the crystal in an inhomogeneous Mg depth profile, depending on the VTE duration. The neutron activation analysis shows that the VTE hardly induces Mg evaporation away from the crystal. First, the Mg ions of crystal internal diffused to the surface in the early stage of VTE, and then they diffused slowly back into the bulk of the crystal toward equilibrium when Li concentration tends to equilibrium.

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Periodical:

Advanced Materials Research (Volumes 785-786)

Pages:

706-709

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.785-786.706

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Online since:

September 2013

Authors:

Li Zhu Zhang, Ping Rang Hua

Keywords:

Li Vapor Transport Equilibration, Mg Concentration, Surface Refractive Index

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