Reduction of interference fringes in absorption imaging of cold atom cloud using eigenface method

(整期优先)网络出版时间:2007-03-13
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Eigenfacemethodusedinfacerecognitionisintroducedtoreducethepatternofinterferencefringesappearingintheabsorptionimageofcoldrubidiumatomcloudtrappedbyanatomchip.Thestandardmethodforprocessingtheabsorptionimageisproposed,andtheoriginoftheinterferencefringesisanalyzed.Comparedwiththestandardprocessingmethodwhichusesonlyonereferenceimage,wetakeadvantageoffiftyreferenceimagesandreconstructanewreferenceimagewhichismoresimilartotheabsorptionimagethanallofthefiftyoriginalreferenceimages.Thenobviousreductionofinterferencefringescanbeobtained.