BiFeO_3 的线性与非线性光学常数
材料科学
2009-11-13 v1 其他凝聚态物理
摘要
利用光谱椭偏仪，报道了铁电反铁磁体铁酸铋（BiFeO_3）的折射率和吸收率随波长的变化。该材料在 442 nm 波长（2.81 eV）处具有直接带隙。利用光学二次谐波产生技术，确定了非线性光学系数：在 800 nm 基频波长下，d_15/d_22 = 0.20 +/- 0.01，d_31/d_22 = 0.35 +/- 0.02，d_33/d_22 = -11.4 +/- 0.20，且 |d_22| = 298.4 +/- 6.1 pm/V。
引用
@article{arxiv.0801.1626,
title = {Linear and Nonlinear Optical constants of BiFeO_3},
author = {Amit Kumar and R. Rai and Nikolas Podraza and Sava Denev and Mariola Ramirez and Ying-Hao Chu and Jon Ihlefeld and Tassilo Heeg and Jurgen Schubert and Darrell Schlom and Joseph Orenstein and R. Ramesh and Robert Collins and Janice Musfeldt and Venkatraman Gopalan},
journal= {arXiv preprint arXiv:0801.1626},
year = {2009}
}
备注
4 pages, 3 figures