Friesem A A, Fedorowicz R J
Radar and Optics Laboratory, Institute of Science and Technology, The University of Michigan, AnnArbor, Michigan 48107, USA.
Appl Opt. 1967 Mar 1;6(3):529-36. doi: 10.1364/AO.6.000529.
Two and three primary colors derived from an He-Ne gas laser and an argon gas laser were employed in recording and reconstructing holograms. For the tricolor case it is possible to reconstruct a three-dimensional multicolor image which possesses almost all the natural hues of the original object. Each wavelength generates an independent fringe system that is recorded on a photographic plate with a thick emulsion that constitutes a three-dimensional recording medium. In reconstruction, each fringe system diffracts light in a manner satisfying the Bragg relation for a particular reconstructing wavelength. If the reconstruction wavelengths are the same as the original wavelengths used to record the fringe systems, the result is a multicolor reconstruction possessing few or no ghost images. In our experiments, the angle between the object beam and the reference beam was greater than 100 degrees , and the photographic plates were oriented so that the fringe surfaces were approximately perpendicular to the emulsion surfac This minimized the deleterious effects of single-color, ghost image formation and shrinkage during development. Finally, a method of synthesizing multicolor scenes using a multiple-exposure recording with one wavelength and reconstructing with several wavelengths is described.
利用氦氖气体激光器和氩气体激光器产生的两种和三种原色来记录和再现全息图。对于三色情况，可以再现一个三维多色图像，该图像几乎具有原始物体的所有自然色调。每个波长都会产生一个独立的条纹系统，该系统记录在具有厚乳剂的照相底片上，厚乳剂构成三维记录介质。在再现过程中，每个条纹系统以满足特定再现波长的布拉格关系的方式使光发生衍射。如果再现波长与用于记录条纹系统的原始波长相同，则结果是具有很少或没有重影图像的多色再现。在我们的实验中，物光束和参考光束之间的夹角大于100度，并且照相底片的取向使得条纹表面近似垂直于乳剂表面。这使显影过程中单色、重影图像形成和收缩的有害影响最小化。最后，描述了一种使用单波长多次曝光记录并利用几种波长进行再现来合成多色场景的方法。
