Simulation Of Optical Scanning Holography Research

Optical scanning holography (OSH) is a novel optics branch compound of conventional optical holography and computer technology. It is based on the characteristics of digital holography, but also it has its own advantages. Optical scanning holography is a unique real-time holography, where holographic information of a 3-D object can be acquired by using a single 2-D optical scan. The technique was called optical scanning holography in order to emphasize the novel fact that holographic recording can be achieved by active optical scanning. So far, applications of OSH include scanning holographic microscopy,3-D image recognition,3-D optical remote sensing. Recently, it has been paid extensive attention by researchers around the world.Optical scanning holography involves active optical scanning and optical heterodyning. An optical processor scans out object information by moving an optical beam. Meanwhile, a photo detector accepts all lights and gives an electrical output that can both be stored and displayed. Hence, optical information will have been converted into electrical information. Conventional Optical detection cannot extract phase information of the object field. While holography requires the preservation of the phase information, we, therefore, need to find a way to preserve the phase information during photo detection if we are expected to use optical scanning to record holographic information. The solution to this problem is optical heterodyning.This paper simulates two-pupil optical heterodyne scanning image processor to record the hologram. First, give the reconstruction of the sine-hologram, the cosine-hologram, and the complex real image and virtual image hologram, respectively. Second, initial validation of this simulation method can eliminate the zero order diffraction components and the conjugate image.