This window opens if you press the **Generate Amplitudes...** button of
the **Node Prior-Info.** window when its focus node is a valid Polarizer.
The window allows you to enter the angle theta between the X axis and the
polarization axis. This angle is sufficient to characterize a Polarizer.

Even if the focus node is a Polarizer, when you press the **Generate
Amplitudes...** button, the computer will refuse to open the above window
unless:

- the focus node has exactly one parent node,
- the parent node is a vector-field node.

Quantum Fog gives names of the form (N_{x},
N_{y})N_{loss }to the states of the Polarizer. N_{x},
N_{y} and N_{loss} are non-negative integers. N_{x}
refers to the number of outgoing photons polarized in the X direction,
N_{y} to the number of outgoing photons polarized in the Y direction,
and N_{loss} to the number of photons absorbed by the polarizer.

More information about Polarizers can be found in the document entitled "Quantum Fog Library Of Essays" that accompanies this manual.