摘要
报道了Ｈａｒｔｍａｎｎ波前探测与信标光强度关系的实验研究。给出了在信标光强度变化时的波前探测相对误差以及波前探测误差对自适应光学系统闭环控制的影响。
AbstractWavefront detection is a key part in an adaptive optics system,since the wavefront correc-tion by an adaptive optics sysem is based on the detection information;The accuracy ofwavefront detection directly affect the effectiveness of the wavefront correction of an adaptiveoptics system,The detection accuracy is partly depending on the strength of a beacon comingfrom a destination. ThiS paper reports the effect of a beacon intensitv on the wavefront detectionby Hartmann wavefront sensor both in experiment and numerical simulation. The tilts variancedue to the variation of a beacon intensity is analysed.According to the research, whetherthe detection error is important when an adaptive optics system is used to correct a wavefront dis-tortion depends on the strength of a beacon. The detection error may be negligible compared tothe other errors of an adaptive optics system when the beacon strength is relatively large andplaces in the linear range of a detector.However,the attention must be paid when a beaconstrength is relatively weak,since the detection error will become one or two orders larger thanthat of detection for a relatively strong beacon. This conclusion is well supported by the researchfor the special adaptive optics system. And the square-inversed relationship of the detectionerror withthe beacon intensitv is verified.
出处
《强激光与粒子束》
EI
CAS
CSCD
1995年第1期117-120,共4页
High Power Laser and Particle Beams
