The VEOM is a generic electro-optical device
that can take the place of any of a number of different optical components, depending on
how it is built and biased in operation. It is based on a simple thin film structure that
can be manufactured with conventional techniques. The device can be implemented as a
mirror, window, beamsplitter, shutter, light modulator, variable wave plate, or optical
logic element. It requires no micro-machining and has higher predicted performance than
any similar types of device.
There are many applications and
derivatives of this technology. One of the interesting aspects of this technology is its
scalability. It can be manifest as a nanoscale device or as large sheets of architectural
glass. In both cases, the technology to apply the coatings already exists. It can be built
to be either polarization sensitive or polarization insensitive. It can be built to
operate at a fixed color as a variable reflectance device with full operating range from
"window" to "beamsplitter" to "mirror". It can be built to
operate as a tunable spectral filter, with or without variable reflectance at each
discrete color (frequency). These different functionality's are achieved by variations in
the manufacturing process. They can all be applied at any scale of construction.
This is a simulation of a typical
VEOM device. It implements a broadband rejection (variable neutral density) function.
Here is a two color notch filter.
It is designed for suppression two laser lines simultaneously.
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