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Laser beam segmentation

Physics Asked by Weston on April 12, 2021

I want to point out that I have almost no knowledge in light and similar topics in physics, so this may sound like a weird question.

I was wondering if it’s possible to make a laser beam appear segmented. Don’t ask me why, but figuring this out might help me in one of the projects I’m working on.

To make you understand this question better, I will just make a small example with text.
Let’s assume this is a laser beam: __________________________
And I would like to segment this laser beam like so: _______ __ __ _ _____ _ ___ _
Would that be possible in any kind of way?

The preferable way I want this to happen is right at the emission point.
Here is a picture:enter image description here

One of my own theories was to use some sort of very fast flickering lens with certain flicker patterns near the emission point, but I don’t think that makes any sense. Does it? I would like to know your theories!

EDIT: I found out that a pulsed laser can do the thing I need.

One Answer

Depending on timescales this could be very easy with an optical chopper https://en.m.wikipedia.org/wiki/Optical_chopper

This is a device with a pattern of holes that rotates. The pattern of holes and constant rotation rate modulates the light on and off as desired.

Answered by Jagerber48 on April 12, 2021

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