实时全息术检测透明物的一种新方法
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摘要
介绍了实时全息术检测透明物的一种新方法 ,它采用物光再现的参考光和参考光通过全息图的直透光所形成的干涉图纹检测透明物体的变化。证明了这组干涉图纹与用参考光再现的物光和物光通过全息图的直透光所形成的干涉图纹分布规律相似 ,仅在相位上相差π。还讨论了这组干涉图纹的衬比和获得最佳衬比的条件。此方法可消除物光光路上某些因素带来的相位畸变 ,避开待测物体自发光的干扰 ,并可在全息图后方任意位置进行记录 ,这使实时全息术在实践中更具有灵活性 ,有助于它在更广阔领域内的应用
A real time holographic testing method of transparent objects by using the interference pattern formed by the reconstruction of the reference wave and the original reference wave is introduced. The above interference fringe pattern is proved to be similar to the pattern which is formed by the reconstruction of the initial object wave and the wave scattered by the object during observation. The principle of this method and the characteristic function of the contrast of the interference pattern are presented. The phase distortion caused by any optical element in object optical path can be eliminated and the unexpected light emitted by the under testing object itself can be also avoided by using this method.
A real time holographic testing method of transparent objects by using the interference pattern formed by the reconstruction of the reference wave and the original reference wave is introduced. The above interference fringe pattern is proved to be similar to the pattern which is formed by the reconstruction of the initial object wave and the wave scattered by the object during observation. The principle of this method and the characteristic function of the contrast of the interference pattern are presented. The phase distortion caused by any optical element in object optical path can be eliminated and the unexpected light emitted by the under testing object itself can be also avoided by using this method.
引文
[1]Rodriguez VeraR ,Berriel ValdosLR ,Morales RomeroAAetal..Holographictechniquesinthecolourreproductionoftwo dimensionalimages .Opt.Engng .,1989,2 8(2 ) :191～ 196
[2 ]史密斯HM .全息记录材料 .北京 :科学出版社 ,1984.12
[3]熊秉衡 ,王正荣 ,张永安等 .利用卤化银乳胶制作具有予期相位调制度的、位相型、薄全息光栅的研究 .光学学报 ,1997,17(8) :10 2 1～ 10 2 7
[4 ]熊秉衡 ,王正荣 ,张永安等 .同时获得高亮度检测光场和高衬比度干涉条纹的实时全息记录方法 .光学学报 ,1999,19(5 ) :6 0 4～ 6 0 8
[5 ]熊秉衡 ,王正荣 ,张永安等 .可获得高反衬度干涉条纹的实时全息记录方法 .光子学报 ,1996 ,2 5 (8) :70 7～712
[6 ]王正荣 ,熊秉衡 ,张永安等 .用实时全息术研究低速变化过程的一种简易系统 .光学学报 ,1997,17(6 ) :5 72～ 5 76
[7]杨润海 ,许昭永 ,赵晋明等 .微破裂成核过程和应力(场 )关系的实验研究 .地震研究 ,1998,2 1(2 ) :12 8～133
[8]王正荣 ,熊秉衡 ,张永安等 .用实时全息法配合摄像机研究固体火箭推进剂的燃烧过程 .激光杂志 ,1998,19(6 ) :18～ 2 0
[2 ]史密斯HM .全息记录材料 .北京 :科学出版社 ,1984.12
[3]熊秉衡 ,王正荣 ,张永安等 .利用卤化银乳胶制作具有予期相位调制度的、位相型、薄全息光栅的研究 .光学学报 ,1997,17(8) :10 2 1～ 10 2 7
[4 ]熊秉衡 ,王正荣 ,张永安等 .同时获得高亮度检测光场和高衬比度干涉条纹的实时全息记录方法 .光学学报 ,1999,19(5 ) :6 0 4～ 6 0 8
[5 ]熊秉衡 ,王正荣 ,张永安等 .可获得高反衬度干涉条纹的实时全息记录方法 .光子学报 ,1996 ,2 5 (8) :70 7～712
[6 ]王正荣 ,熊秉衡 ,张永安等 .用实时全息术研究低速变化过程的一种简易系统 .光学学报 ,1997,17(6 ) :5 72～ 5 76
[7]杨润海 ,许昭永 ,赵晋明等 .微破裂成核过程和应力(场 )关系的实验研究 .地震研究 ,1998,2 1(2 ) :12 8～133
[8]王正荣 ,熊秉衡 ,张永安等 .用实时全息法配合摄像机研究固体火箭推进剂的燃烧过程 .激光杂志 ,1998,19(6 ) :18～ 2 0
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