Objective
- Production of holographic elements for Integrated optics (volume phase grating,
amplitude grating, Fresnel lens, storage media, in- and out-coupling gratings)
Method
- Fabrication by lithography and two wave mixing techniques
- Volume phase gratings by diffusion of nanoparticles (upconcentration) and subsequent
immobilisation
- Photolithography techniques and subsequent developement as alternative
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Results
- Induction of refractive index variation of 1.5× 10-2
through the variation of the concentration of inorganic nanoparticles during the
holographic storage process
- Film thickness 500 nm to 20 µm
- Information storage process by optical density variation
- Production of relief sinusoidal structure with diffraction efficiency of 32 % and
signal/noise ratio of 500
Applications
- In- and out-coupling laser beam
- Lenses
- Data storage
- Image storage
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Laboratory Technology
