A model-based adaptive non-null interferometry （MANI） is proposed for steep optical freeform surfaces in situ testing. The deformable mirror （DM） affording the flexible compensation is monitored with the beam in t...A model-based adaptive non-null interferometry （MANI） is proposed for steep optical freeform surfaces in situ testing. The deformable mirror （DM） affording the flexible compensation is monitored with the beam in the interferometer by a wavefront sensor. The residual wavefront aberration in the non-null interferogram is eliminated by the multi-configuration ray tracing algorithm based on the system model, especially the DM surface model. The final figure error can be extracted together with the surface misalignment aberration correction. Experiments proving the feasibility of the MANI are shown.展开更多
基金supported by the National Natural Science Foundation of China(No.61705002)supported by the National Natural Science Foundation of China(No.61675005)+2 种基金the Opening Project of Key Laboratory of Astronomical Optics & Technology in Nanjing Institute of Astronomical Optics & Technology of Chinese Academy of Sciences(No.CAS-KLAOT-KF201704)the Doctoral Startup Foundation of Anhui University(No.J01003208)the National Key R&D Program of China(No.2016YFC0301900)
文摘A model-based adaptive non-null interferometry （MANI） is proposed for steep optical freeform surfaces in situ testing. The deformable mirror （DM） affording the flexible compensation is monitored with the beam in the interferometer by a wavefront sensor. The residual wavefront aberration in the non-null interferogram is eliminated by the multi-configuration ray tracing algorithm based on the system model, especially the DM surface model. The final figure error can be extracted together with the surface misalignment aberration correction. Experiments proving the feasibility of the MANI are shown.
