Calcutations of beamparameter

Hello Guys and welcome to my second post :)

I´m now starting to create a Beamprofiler in LabVIEW 2014 according to ISO 11146.

ISO 11146: Lasers and laser-related equipment  - Test methods for laser beam widths,
divergence angles and beam propagation ratios -

The ISO is a standardized procedure to determine all important laser parameters. Here all calculations are done with the help of the calculation of the momenta of the acquired picture. Formula for the first order moments are following:

They give back the centroid coordinates also called center of mass. That´s the position of your laserbeam in your picture.

Too be continued ...

LabView Beamprofiler ISO 11146 Introduction

Hello Guys,

here i will present you how to create a beamprofiler according to the ISO Standart 11146.
I started to develope such a profiler in LabView and will show you the individual steps.

A Laser-Beam-Profiler is a tool to measure the characteristic parameter of a laserbeam, such as beamradius, ellipticity and M². Measuring and optimizing a laserbeam gets more and more important in application like lithography or laser welding.

A typical beamprofiler looks like this:

Typical Laserbeamprofiler interface.
Source: http://en.symphotony.com/wp-content/uploads/screenshot_en.png

To measure such a beam you can use a knife-edge profiler, a slit profiler or recently more common a ccd sensor.