华侨大学学报（自然科学版）
華僑大學學報（自然科學版）
화교대학학보（자연과학판）
JOURNAL OF HUAQIAO UNIVERSITY(NATURAL SCIENCE)
2009年
6期
623-627
,共5页
杨氏双缝干涉实验%涡旋光束%拓扑荷数%轨道角动量
楊氏雙縫榦涉實驗%渦鏇光束%拓撲荷數%軌道角動量
양씨쌍봉간섭실험%와선광속%탁복하수%궤도각동량
Young's double-slit interference experiment%vortex beams%topological charge%orbital angular momentum
研究涡旋光束经过杨氏双缝干涉后的干涉条纹,发现不同于平面波的竖直干涉条纹,涡旋光束的干涉条纹出现扭曲.从条纹的上部往下看,涡旋光束的干涉条纹出现横向的移动,而移动的方向和大小分别取决于涡旋光束拓扑荷数的符号和数值大小.对干涉条纹进行观察发现,实验观察结果和理论结果基本上保持一致,可以通过观察涡旋光束的干涉条纹来判断涡旋光束的轨道角动量.
研究渦鏇光束經過楊氏雙縫榦涉後的榦涉條紋,髮現不同于平麵波的豎直榦涉條紋,渦鏇光束的榦涉條紋齣現扭麯.從條紋的上部往下看,渦鏇光束的榦涉條紋齣現橫嚮的移動,而移動的方嚮和大小分彆取決于渦鏇光束拓撲荷數的符號和數值大小.對榦涉條紋進行觀察髮現,實驗觀察結果和理論結果基本上保持一緻,可以通過觀察渦鏇光束的榦涉條紋來判斷渦鏇光束的軌道角動量.
연구와선광속경과양씨쌍봉간섭후적간섭조문,발현불동우평면파적수직간섭조문,와선광속적간섭조문출현뉴곡.종조문적상부왕하간,와선광속적간섭조문출현횡향적이동,이이동적방향화대소분별취결우와선광속탁복하수적부호화수치대소.대간섭조문진행관찰발현,실험관찰결과화이론결과기본상보지일치,가이통과관찰와선광속적간섭조문래판단와선광속적궤도각동량.
The interference fringes of Young's double-slit experiment illuminated by vortex beams are studied.Compared with the vertical fringes formed by plane wave,the interference fringes formed by vortex beams are twisted.It can be found as one looks from the top to the bottom of the interference pattern that the fringes are shifted,and the direction and magnitude of the shift depends on the symbol and value of the topological charge of vortex beams.Furthermore,the interference fringes of vortex beam are experimental investigated as well,it is found that the experimental observations are well consistent with the theoretical analysis.Therefore,based on the interference fringes of Young's double-slit interference experiment,the topological charge of vortex beams can be measured.This can be a convenient and effective method for measuring the topological charge of vortex beams.
