Arrangement af holografisk energitolkningssystem

Can a phase light modulator be used in holographic 3D display systems?

Texas Instruments has developed a piston MEMS phase light modulator (PLM) that should be extremely useful in the development of holographic 3D display systems. This PLM is capable of achieving a much higher efficiency of 132 − 134.

What is the maximum efficiency of a DLP for holography?

For holography, the DLP can only display amplitude holograms with maximum efficiency of 10%. The DLP works by flipping its mirrors in one direction or the other to redirect light.

What kind of materials can amplify hologram intensity?

Refreshable materials, such as photorefractive polymers, can record the wavefront generated by the SLM and, owing to their high diffraction efficiency, amplify the intensity of the hologram. Another approach that can increase the intensity of a hologram using low-efficiency devices is to use a refreshable holographic material.

Are holographic displays a stepping stone to better visual comfort?

While other technologies like (auto) stereoscopy, light-field, or volumetric displays have limitations, they will likely prove to be stepping stones leading to better visual comfort until holographic displays are achieved.

How do waveguides work in holography?

In holography, waveguides work by distributing light projected from a single source over a 2-dimensional grid. The phase at the end of each waveguide is adjusted by an electro-optic or thermo-optic phase regulator, and the light is extracted orthogonally from the wafer by a grating outcoupler terminating each waveguide.

What are the main sources of noise in holograms?

Other sources of noise in holograms include quantization error of the phase levels, diffraction in the pixel structure, and speckle caused by the random phase. To reduce this noise and boost the signal, Gerchberg and Saxton developed an iterative algorithm (GS) in 1972.