Abstract：The LiNbO3 crystals doped with Cr3+ ion (Cr:LN) and co-doped with Cr3+ and Zn ions (Zn:Cr:LN) were grown by the Bridgman method. The absorption coefficient and concentration of Cr3+ in crystals were measured by UV/Visible spectra and inductively coupled plasma (ICP) spectrometry, respectively. The effective distribution coefficients (k) of Cr3+ in the crystals were calculated. The results indicated that the k for Cr: LN crystal decreased from 3.75 to 2.49 as the incorporating concentration of Cr3+ increased from 0.1 to 0.5 mol%; the introduction of ZnO in Cr:LN induced the reduction of k value effectively. However, the k value increased from 1.85 to 2.25 as the incorporating concentration of ZnO increased from 3 to 6 mol%. The variation of the k value was explained by the suppressing effect of ZnO on the incorporation of Cr3+ ions and the distribution of Cr3+ in LN.
Key words：LiNbO3 crystal;ZnO;Cr3+ ion;Absorption spectra;ICP;Effective distribution coefficient
夏海平，王金浩，曾宪林，章践立，张新民，聂秋华. ICP与吸收光谱测定LiNbO3, Zn:LiNbO3晶体中Cr3+离子的分布及有效分凝系数[J]. 光谱学与光谱分析, 2005, 25(06): 960-963.
XIA Hai-ping, WANG Jin-hao, ZENG Xian-lin, ZHANG Jian-li, ZHANG Xin-min，NIE Qiu-hua . Determination of Distribution and Effective Distribution Coefficient of Cr3+ in LiNbO3 Single Crystals Using UV/Visible Absorption Spectra and ICP . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(06): 960-963.
