摘要
在激光雷达以及光谱仪定标时常常需要较宽以及高准直性的激光光束。设计了一出射光束为16mm,扩束比为20倍的激光扩束器光学系统。通过移动激光扩束器的物镜与目镜间隔,可以实现光谱范围在543.5-850nm的激光扩束;比较了使用该激光扩束器发射的准直激光束与理想的单色平行光充满成像光谱仪的入瞳孔径后成像光谱仪传递函数的变化,说明该光学系统可行。
Wide-aperture and highly collimated light beam is needed in Ladar and correction of spectrum apparatus. In this paper, one beam expander is design with beam aperture of 16mm and expander ratio of 20. By adjusting the interval between eyepiece and object lens, the beam expander can expand laser beam from 543. 5nm to 850nm. By comparing the change of modulation transfer function of spectral imager with ideal collimated monochromatic light and with expanded and collimated beam by laser beam expander, it is illustrated that the beam expander is valid.
出处
《光学仪器》
2007年第3期31-34,共4页
Optical Instruments
关键词
设计方法
激光扩束器
多波长激光
design method
laser beam expander
multi-wavelength laser
