Open AccessPreliminary research on Poisson-line alignment technique
Author(s) -
Zili Zhao,
Hao Yi-Dan,
Feng Wang,
Ying Zhang,
Fang Wang,
Yuan Yong-Teng,
Yongkun Ding
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.2635
Subject(s) - excursion , poisson distribution , line (geometry) , optics , center (category theory) , intensity (physics) , physics , geometry , mathematics , statistics , chemistry , political science , law , crystallography
Poisson line technique is a method of generating a straight line by diffraction for high precision alignmentwhich can keep the center of Poisson spot in this line at long distances (several tens or hundreds of meters). Numerical simulation and experimental demonstration are proposed to research this technique. The intensity of the line increases asymptotically to the incident intensity as distance from the disk increases. The diameter of the line increases as the distances from the disk increases. Whereas it decreases as the diameter of the disks increases. The direction of the line is parallel to laser beam and propagates through the center of the diskwhich is sensitive to center excursion and insensitive to the incline of the disk. Poisson line is sensitive to 10 μm excursion in simulation. And Poisson line technique can adjust 50 μm center excursion at long distance in experimental demonstration.