Bi薄膜的非線性光學性質

• Main Authors: Wu Keng-Shuo, 吳耿碩
• Other Authors: Chern Ming-Yau
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/88802386822199447986

碩士 === 國立臺灣大學 === 物理學研究所 === 89 === Bi films were grown onto Corning 7059 Glass by pulsed laser deposition (PLD). A focused laser beam was shone through the Bi films, and the intensity of the laser beam was detected as a function of the position of the films. We observed that Bi films exhibit large nonlinear optical properties, including nonlinear refraction and nonlinear absorption. The previously described technique of measuring the optical nonlinearities is referred as a "Z-scan". Furthermore, we measured precisely the refractive indices and the thickness of the films by Spectrocscopic Ellipsometry and X-ray reflectivity, respectively. Finally, we investigated the mechanism of the optical nonlinearity of the Bi films.