01-20-2021, 12:01 AM
I had asked on YouTube about the exact setup for the laser profiler that you used in order to achieve perfect focus.
What I'm hoping to learn is what I need to replicate your results, my understanding of it is as follows:
Thanks!
What I'm hoping to learn is what I need to replicate your results, my understanding of it is as follows:
- Lower laser output to minimum and send beam through neutral density attenutators, such as these: https://www.thorlabs.com/newgrouppage9.c...up_id=5011 to prevent camera sensor damage. Acceptable range would be something like OD6 and attentuator(s) should be close to laser to prevent exceeding W/cm2 damage threshold
- Get a cheap camera, determine the distance to the sensor surface from some reference so you can figure out the distance from the laser to focal plane.
- Remove camera lens element so that there is no additional beam divergence/convergence.
- Move and focus laser to get the tightest spot, using profiling software to help determine spot diameter.
Thanks!