摘要
BaWO4晶体是一种很有应用前景的喇曼激光晶体。本文根据对称性分类,用商群理论分析了Ba-WO4晶体的喇曼光谱。一个原胞中含有两个BaWO4分子,理论上有36个振动膜,和我们用群论计算得数目一致。其中有18支拉曼活性光学膜。我们测得了10支拉曼峰,并对测得的各个配置的拉曼峰进行了指认,其中X(ZZ)X配置921cm-1处的喇曼峰强度最强,线宽较窄,对于作为喇曼激光晶体来讲是很有益的。
In this paper Raman spectra of BaWO4 crystal was analyzed in terms of group space theory. Thirty- six vibration modes were acquired. The primitive cell contains two formula units in BaWO4 crystal. Therefore, it has thirty- six free degrees. The number of vibration modes is complied with that of the free degree. It was analyzed that BaWO4 crystal has eighteen Raman - active optical spectra. It was acquired 10 Raman peaks from our experiment, and we analyzed one by one. It is found that at 921cm^-1, it has the strongest intensity and narrow bandwidth with the scattering configurations of X（ZZ）X. Therefore it is suitable for BaWO4 crystal as the Raman laser crystal.
出处
《光散射学报》
2006年第3期248-253,共6页
The Journal of Light Scattering
基金
国家自然科学基金资助项目(No:10274043)
山东大学晶体材料国家重点实验室开放课题。
