<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
Good afternoon everybody!</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
<br>
</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
I hope that this message finds you well.</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
<br>
</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
Currently, I am trying to change the angle of incidence of the laser beam in the 3D laser-slab example. How I've done this so far is by changing the position of the lens (the source of the laser rays) relative to the spot I want to focus on (the target of the
laser rays). Looking at the rays from the checkpoint file, the angle seems alright - however, with the focal spot itself I'm seeing a hemi-circle instead of the ellipse which I would expect. I've tried changing the torsion angle of the target around the z
axis but have not observed this to have much effect, and it works well for normal incidence.</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
<br>
</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
One way I can think of getting around this is by changing the semi-major axis of the laser and target spot to what would be the correct ellipse for that angle, and then just doing normal incidence. </div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
<br>
</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
Does anyone know how I could do angular laser incidence without cheating it like this though?</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
<br>
</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
Kind regards, and I'm grateful for any advice you can give,</div>
<div style="font-family: Calibri, sans-serif; font-size: 11pt; color: inherit; background-color: transparent;">
Izzy Rodger</div>
</body>
</html>