CAJ | 학술논문

在超快光学领域中的相干控制实验中,往往由于基频及其倍频激光脉冲波前面的位相面畸变与相位不一致性的存在而无法达到预期的实验结果.本文设计了一种诊断此畸变的实验方法,制作得一台效果显著的自动位相修正系统,成功地使用在相干控制光电流实验中.该系统利用位相畸变修复算法,根据光强与位相差的关系求出位相差的空间表面结构,由此计算压电陶瓷的调节电压与方向,使得可移动反射镜朝畸变减少的方向移动.实验结果表明该系统可实时自动地调节两光束的波前面保持平行.
재초쾌광학영역중적상간공제실험중,왕왕유우기빈급기배빈격광맥충파전면적위상면기변여상위불일치성적존재이무법체도예기적실험결과.본문설계료일충진단차기변적실험방법,제작득일태효과현저적자동위상수정계통,성공지사용재상간공제광전류실험중.해계통이용위상기변수복산법,근거광강여위상차적관계구출위상차적공간표면결구,유차계산압전도자적조절전압여방향,사득가이동반사경조기변감소적방향이동.실험결과표명해계통가실시자동지조절량광속적파전면보지평행.
In ultrafast optical coherent control, the existence of the phase distortion and phase inconsistence on fundamental frequency and its second harmonic generation laser wavefront leads to fail to achieve the desired experiment results in most cases.An experimental method in diagnosing such distortion situation was designed to make an effective auto-control system applied sucessfully in the coherent control photocurrent experiments.The retrieval algorithm was used, and the spatial surface structure was calculated based on the relationship between the beam intensity and phase difference, thus the voltage or direction was achieved.In this way, the mobile-mirror moves to less aberration.The mentioned experimental result proves that the system can adjust the two wavefronts being parallel automatically in real time.