【摘要】 给出了一种单次曝光制作多维θ调制全息物片的新方法。该方法采用4F光学系统和空间滤波技术,用单色平行光垂直照射4F光学系统物平面上的θ调制物片样品,在频谱面上放置只允许±1级频谱通过的滤波器,每一种排列方向的±1级频谱在像平面上形成与该种频谱对应的θ调制物片样品区域的像,且在成像区域形成该±1级频谱的干涉条纹。用记录介质对各种排列方向的±1级频谱形成的像的组合及各成象区域中的干涉条纹一次性曝光进行线性记录,制作出θ调制全息物片。更多还原

【Abstract】 A new method of fabricating HolographicθModulation board was presented in this paper.In this method,the 4F optical system and spatial filtering optical technique was constructed.The parallel monochromatic light should be perpendicular to theθmodulation sample board on the 4F optical system input plane. Furthermore,the spatial filter on the 4F optical system frequency spectrum plane allows only±1 level frequency spectrum to pass through.Tne±1 level frequency spectrum in each direction form image ofθmodulation sample region corresponding to this frequency spectrum the interference fringes corresponding to that±1 level frequency spectrum can be also obtained in imaging regions.Thus,theθmodulation board was fabricated on recording medium by one - time exposure linear recording the combination of image formed by±1 level frequency spectrum in each direction and the interference fringes in each imaging region.更多还原