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<ol class="chapter"><li><a href="polsim.html"><strong aria-hidden="true">1.</strong> polsim</a></li><li><a href="installation.html"><strong aria-hidden="true">2.</strong> Installation</a></li><li><a href="usage.html"><strong aria-hidden="true">3.</strong> Usage</a></li><li><a href="simulations.html"><strong aria-hidden="true">4.</strong> Simulations</a></li><li><ol class="section"><li><a href="format.html"><strong aria-hidden="true">4.1.</strong> File Format</a></li><li><a href="beams.html"><strong aria-hidden="true">4.2.</strong> Beams</a></li><li><ol class="section"><li><a href="beams/linear.html"><strong aria-hidden="true">4.2.1.</strong> Linearly Polarized</a></li><li><a href="beams/circular.html"><strong aria-hidden="true">4.2.2.</strong> Circularly Polarized</a></li><li><a href="beams/elliptical.html"><strong aria-hidden="true">4.2.3.</strong> Elliptically Polarized</a></li></ol></li><li><a href="elements.html"><strong aria-hidden="true">4.3.</strong> Elements</a></li><li><ol class="section"><li><a href="elements/polarizer.html"><strong aria-hidden="true">4.3.1.</strong> Polarizer</a></li><li><a href="elements/rotator.html"><strong aria-hidden="true">4.3.2.</strong> Rotator</a></li><li><a href="elements/retarder.html"><strong aria-hidden="true">4.3.3.</strong> Retarder</a></li><li><a href="elements/qwp.html"><strong aria-hidden="true">4.3.4.</strong> Quarter-Wave Plate</a></li><li><a href="elements/hwp.html"><strong aria-hidden="true">4.3.5.</strong> Half-Wave Plate</a></li></ol></li></ol></li><li><a href="examples.html"><strong aria-hidden="true">5.</strong> Examples</a></li><li><ol class="section"><li><a href="examples/one_polarizer.html"><strong aria-hidden="true">5.1.</strong> One Polarizer</a></li><li><a href="examples/crossed_polarizers.html"><strong aria-hidden="true">5.2.</strong> Crossed Polarizers</a></li><li><a href="examples/circular_polarizer.html"><strong aria-hidden="true">5.3.</strong> Circular Polarizer</a></li></ol></li><li><a href="reference.html"><strong aria-hidden="true">6.</strong> Quick Reference</a></li><li><a href="conventions.html" class="active"><strong aria-hidden="true">7.</strong> Conventions</a></li></ol>
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<a class="header" href="#conventions" id="conventions"><h1>Conventions</h1></a>
<a class="header" href="#definitions" id="definitions"><h2>Definitions</h2></a>
<a class="header" href="#polarization-orientation" id="polarization-orientation"><h3>Polarization Orientation</h3></a>
<p>Throughout this documentation you might see me say that the orientation of a beam is 45 degrees. There's a number of different ways to interpret this, so let's spell out exactly what I mean.</p>
<ul>
<li>The beam is traveling away from me.</li>
<li>The +x-axis is pointed to the right, and corresponds to an angle of zero.</li>
<li>All other angles are measured counter-clockwise from the +x-axis.</li>
</ul>
<p>For example, if I say that a beam has an orientation of 90 degrees, that means that it is oriented along the +y-axis. In actuallity, the polarization of a beam is a line that extends out to infinity in both directions, so the polarization in the previous example would extend along both the +y- and -y-axes.</p>
<a class="header" href="#handedness" id="handedness"><h3>Handedness</h3></a>
<p>The handedness of a circularly polarized beam is defined using the right-hand rule. If the beam is traveling away from you, the polarization vector of a "right"-hand circularly polarized beam will rotate clockwise in the plane of the polarization.</p>
<a class="header" href="#reports" id="reports"><h2>Reports</h2></a>
<a class="header" href="#relative-phases" id="relative-phases"><h2>Relative Phases</h2></a>
<p>The output of <code>polsim</code> will follow the conventions of Jones calculus with regards to relative phases. This means that the phase of the x-component will be factored out from both the x- and y-components, leaving the x-component as a real number, and potentially leaving the y-component with some phase relative to the x-component.</p>
<a class="header" href="#intensities" id="intensities"><h2>Intensities</h2></a>
<p>All beams start with an intensity of 1. If the output of your simulation shows <code>intensity: 5.00000e-1</code>, that means that the intensity of the beam at the end of the simulation is half of the original intensity.</p>
<a class="header" href="#phases" id="phases"><h2>Phases</h2></a>
<p>The phases that you see at the end of a simulation are always in radians.</p>
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