I have a project, and I am waiting for my parts to come in. My intention is to use a beam expander to take a 405nm beam to appx 12mm diameter, then pass it through a zero aperture iris. Beam power is less important to my particular project than maintaining and controlling beam diameter along the entire beam.
I am no optics ninja, in fact other than teasing cats and sighting my gun, Im a complete noob. So I just discovered this Airy Disk thing, I am curious to know 1st does a zero aperture iris cause this same distortion pattern? If so, what is necessary to eliminate it? If not, just how fine a beam do you think is possible given the arrangement described?
I dont mind you dumbing it down if necessary...Ill even read a bunch of links if you feel it necessary for me to understand.
Thanks in advance
Zip
I am no optics ninja, in fact other than teasing cats and sighting my gun, Im a complete noob. So I just discovered this Airy Disk thing, I am curious to know 1st does a zero aperture iris cause this same distortion pattern? If so, what is necessary to eliminate it? If not, just how fine a beam do you think is possible given the arrangement described?
I dont mind you dumbing it down if necessary...Ill even read a bunch of links if you feel it necessary for me to understand.
Thanks in advance
Zip