Nonlinear optics
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Nonlinear optics is a branch of optics that studies the case when optical properties of matter depend on the intensity of the input light. Nonlinear phenomena become relevant only when the input light
Wiki perfect PCM photon recoil
Holography
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Holography is an imaging technique that allows a wavefront to be recorded and later reconstructed. It is best known as a method of generating three-dimensional images, and has a wide range of other us
Nonlinear optics
…producing the phase-conjugation effect is known as a phase-conjugate mirror (PCM). One can interpret optical phase conjugation as being analogous to a real-time holographic process. In this case, the interacting beams simultaneously interact in a nonlinear optical material to form a dynamic hologram (two of the three input beams…
Two photographs of a single hologram taken from different viewpoints
Horizontal symmetric text, by Dieter Jung
This is a photograph of a small part of an unbleached transmission hologram viewed through a microscope. The hologram recorded an image of a toy van and car. It is no more possible to discern the subject of the hologram from this pattern than it is to identify what music has been recorded by looking at a CD surface. The holographic information is recorded by the speckle pattern.
Peace Within Reach, a Denisyuk DCG hologram by amateur Dave Battin