太赫兹高斯光束整形环形光束  

Caussian beam shaping terahertz Gaussian beam to ring beam

作　　者：马学[1] 李琦[1] 鲁建业[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江哈尔滨150080

出　　处：《红外与激光工程》2017年第5期198-205,共8页Infrared and Laser Engineering

摘　　要：由于很多实际应用中需要光斑环形分布,因此太赫兹高斯光束整形环形光束的研究具有重要的理论和应用价值。文中利用GS算法设计相位板,将太赫兹波段的高斯光束整形为环形光束。讨论了刻蚀台阶数量对该波段相位板整形结果的影响。对不同传输距离进行了仿真计算,并在实验中将热释电相机PyrocamⅢ作为实验中的探测器对不同传输距离进行了实验。实验结果表明,实验结果与仿真计算结果接近。In many practical applications, it is required that the spot is ring distributed. Therefore, it is important to do the experimental research of converting the terahertz Gaussian beam to a ring beam. In the paper, a phase plate was designed using GS algorithm, converting the Gaussian beam with frequency of terahertz band to a ring beam. The shaping effect of multi-order encoding phase plates was discussed. According to different transmission distances, different simulations were done. Using the Pyrocam Ⅲ as the recording device, beam shaping experiments were carried out on different distance. The experimental results show that the experimental results are close to the simulation results.

关 键 词：太赫兹 高斯光束整形 GS算法 环形光束 

分 类 号：TN29[电子电信—物理电子学]