Transmission
- Metallic neutral density filter
Reflection
- Geometric beamsplitters with variable beamsplitting ratio
Technology
- Definition of transmission and reflection by a computer generated geometrical beamsplitter
- Creation of geometrical beamsplitter by the variation of the ratio between transparent and absorbing/reflecting surfaces by a variable configuration of pixel size (starting from 2µm edge length) in a constant raster (50µm by default, can be modified according to customers specification)
- Linear and non linear pattern
- High flexibility by software available at POG and the photolithographic fabrication
- Optical density ranges from practically zero to four or five depending on customers specifications and wavelength range
- Different sizes for prototype and serial quantities possible
Substrate Materials
- see here