A Study of the Measurement of the Deformation of a High-Speed Rotational Mirror

摘要

A high-speed rotational mirror can serve as a modulation mechanism in the optoelectric experiments. Dynamic stability shall be checked before applying this mirror to avoid destroying the rotational spindle. During the highspeed rotation, the mirror may suffer from deformation such that the signal of the experiments will be unstable. The authors propose a measurement method to study the deformation of the mirror at a rotational speed ranging from 5000 to 30000 rpm. The experiment and the numerical simulation show that the mirror deforms. Two kinds of measurement types are presented, and the same results can be obtained.