Electric field induced second harmonic generation in SiO2

• Main Authors: Ming-hung Lin, 林明宏
• Other Authors: Adam Y. Wu
• Format: Others
• Language: en_US
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/25368949425553978035

碩士 === 國立海洋大學 === 電機工程學系 === 89 === SiO2 glass possesses excellent properties including high transparency, high breakdown voltage, low dielectric constant, and easy to obtain, and is widely used in optics, electro-optics, semiconductor manufacturing, etc. Glasses have drawn much interest for research and applications. In this thesis, we will report the second harmonic generation (SHG) in SiO2. We used ND:YAG laser as incident beam and measured the SHG in SiO2 glass by corona poling and under external applied electric field. The Maker Fringes were used to obtain the nonlinear coefficient . The experimental results revealed that SHG intensity could be enhanced by applying external electric field. We also found that annealing process can also enhance the SHG intensity. Defects and impurities in SiO2 glass are found to play important roles in SHG.