Exploring the structured lights and the vector singularities in Nd:YVO4 Laser

• Main Authors: Chang, Huan-Cheng, 張桓誠
• Other Authors: Chen, Yung-Fu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/228erm

碩士 === 國立交通大學 === 電子物理系所 === 107 === This thesis presents two kinds of patterns which are generated from the Nd:YVO4 microchip laser.In the first experiment,we use off-axis foused pumped a-cut Nd:YVO4 laser to generate geometric mode, research the relationship between the reflectance of output couplers and the stable range of the degenerate cavity length.Then we use numerical method to find the small loss parameters which correspond to different reflectance of output couplers in theory.In the second part,we use slightly off-axis circular pumped c-cut Nd:YVO4 laser to generate five types of vector singularity patterns in non-degenerate cavity.We research for their polarization and simulate the two type of circular patterns based on Laguerre-Gaussian mode.