Development and application of holography

The holography is a twostep imaging technology which obtains the whole information from an object with the coherent light interference. The development of holography can be roughly divided into four stages: coaxial holography, offaxial holography, white light reconstructing holography, white light holography. The holography has many features, such as three dimension, never tearing, image reconstruction compression and enlargement, and information mass capacity and so on. The holography is an active branch of optics. In recent years, it has penetrated into every field of social life, and been widely applied to the modern scientific research and industrial production. Especially, it has some special superiority in modern test technology, bioengineering, medicine, art, commerce, security as well as modern memory technology. With fast development of the holography, more and more holographic products have already been stepping into the modern life.