As promised, we have made available some of the data that delegates collected during the 2014 workshop.
Each group took a slightly different approach to imaging the beam profile of the Pulsed Dye Laser. In the most part, we wondered about the effects of imaging the beam in focus, or not; imaging from close to the beam axis, or from a larger angle and the effects of damage to the protective window on the image.
Group A imaged the defocussed beam at a distance of around 50 cm and compared this to the focussed beam:
Group C compared the image obtained from as close the the beam axis as possible and from an angle >45 degrees:
We were all interested to find out whether the profiler was capable of determining hot or cold spots which might influence treatment. Imaging was thus done using a damaged protective window on the laser end-piece (creating cold spots) and compared to an image taken with no protective window: