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Date Announced: 08 Aug 2016
Appreciating laser beam alignment
Let’s assume you have an alarm at home like the one displayed above. In order to silence it, you have to hit the bull’s eye with the beam of a laser pointer. While this is an easy task with a red laser, it would be much more challenging with an invisible infrared laser. If the beam diameter and the target are shrunk to a few micrometers, your morning would definitely be ruined.
Maintenance of laser systems
Laser engineers face a comparable situation during the maintenance of a laser system: a beam needs to follow a specified beam path with μm-precision. Misalignment of mirrors or other optical components causes the beam to be deflected. Besides thermal drift of the system, the slight displacement of optics over time leads to this misalignment. During a typical maintenance, all mirrors and optics are readjusted. In order to determine the beam position at a specific location in the beam path, oftentimes the laser system needs to be opened to access the desired location. This is a tedious and time consuming process. Furthermore, it constitutes a safety issue for medium to high power laser systems which sometimes require the surrounding production environment to be shut down.
Read the full white paper here: http://www.greenteg.com/laser-beam-position-monitoring-efficient-processing/
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