摘要
为了将高斯光束整形为平顶的准直激光光束,在现有双非球面透镜整形器的基础上,设计了一种只使用一片非球面透镜的光束整形器。在理论模型中,提出了更加准确的非球面面形函数计算方法。经过数值模拟和光学设计软件仿真,分析了系统与激光光束参数变化对整形效果的影响,表明这种新型整形器可以使激光光束的平顶性得到明显的提高。此整形器避免了传统折射式光束整形器的体积大、不易调节等弊端,提高了器件的可靠性和实用性。
In order to convert a laser Gaussian beam to a collimated flat-top beam,a new reshaper with only one aspheric lens is designed based on double aspheric lenses reshaper.In the theoretical model,a more accurate calculation method of curves function of aspheric lens is given.The reshaping effection,brought by the change from the parameter of system and laser beam,is given through numerical analysis and optical design software simulation.It is illustrated that the flatten degree of the laser beam can be improved apparently using this new kind of reshaper.The novel method avoids some shortcomings of traditional refractive optical reshaper such as large volume,complexity of regulating,etc,and enhances the reliability and practicability of device.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2010年第10期2543-2549,共7页
Chinese Journal of Lasers
