【摘要】 成功地生长、制备出了一系列合不同掺钒浓度的钾钠铌酸锶钡（ＫＮＳＢＮ：Ｖ）晶体样品。测量了在不同光强、光偏振和掺钒浓度下 ＫＮＳＢＮ晶体的光诱导吸收变化。实验结果显示，ＫＮＳＢＮ：Ｖ晶体存在较强的光诱导吸收，且其光诱导吸收变化明显依赖于泵浦束光强，探测束光偏振和晶体的掺钒量，对于探测束光偏振平行和垂直于ｃ轴的情况，其值分别可达０．５５和 ０． ２２ｃｍ－１。对实验结果进行了解释。更多还原

【Abstract】 We have successfully.grown and prepared KNSBN crystal samples with different V concentrations in our experiment. Measurements of light-induced absorption changes in KNSBN: V crystals were carried out for different intensities. polarization and V concentrations. We find that the light- induced absorption change depends on the intensity of the pump light beam, polarization of the probe light beam and V concentrations. We got variation as high as 0. 55 and 0. 22cm-1 in the light-induced absorption coefficient for the extraordinary and ordinary probe beams, respectively. The results were interpreted in terms of a two- center charge transport model.更多还原