| Abstract: In an embodiment, an optical filter device includes an input polarizer
for selectively transmitting an input signal. The device includes a
wave-plate structure positioned to receive the input signal, which
includes first and second substantially zero-order, zero-wave plates
arranged in series with and oriented at an angle relative to each other.
The first and second zero-wave plates are configured to alter a
polarization state of the input signal passing in a manner that depends
on the power of the input signal. Each zero-wave plate includes an entry
and exit wave plate each having a fast axis, with the fast axes oriented
substantially perpendicular to each other. Each entry wave plate is
oriented relative to a transmission axis of the input polarizer at a
respective angle. An output polarizer is positioned to receive a signal
output from the wave-plate structure and selectively transmits the signal
based on the polarization state. |
| Filed: 4/26/2010 |
| Application Number: 12/767327 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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