大型望远系统波前检测中的波前误差修正  

Amend wave-front errors in measurement on the wave-front of large telescope

作　　者：常山[1] 曹益平[2] 陈永权[2] 

机构地区：[1]上饶师范学院物理系,江西上饶334001 [2]四川大学光电系,四川成都610064

出　　处：《光学仪器》2005年第6期17-22,共6页Optical Instruments

基　　金：四川省科技攻关项目资助(02GG010-010)

摘　　要：在大型望远系统的波前检测中,固定着五角棱镜的运动平台沿并非严格平面的导轨平台移动时,五角棱镜会发生微偏转产生扫描激光束转向的波前误差。用渥拉斯顿棱镜型双频激光干涉仪实时测量五角棱镜的运动误差,计算扫描激光束入射望远系统子孔径时的波前误差,修正此波前误差得到子孔径范围内望远系统自身的波前。During the wave-front testing of a large aperture telescope, when the motional platform sit on a pentagonal prism moves on the guide platform which is no all strict plane, the pentagonal prism can cause a tiny deflection and generate light turning wave-front errors of scanning laser. When kinetic errors of the pentagonal prism can be measured by a dual-frequency laser interferometer used a Williston prism, the wave-front errors of scanning laser through every sub-aperture can be calculated and amended to gain the wave-front errors of every sub-aperture of the large telescope.

关 键 词：大型望远系统 波前 五角棱镜 渥拉斯顿棱镜 双频激光外差干涉法 H-S波 前传感器 

分 类 号：O435[机械工程—光学工程] TH74[理学—光学]