I need little help.
I have http://www.laser2000.de/fileadmin/Produktdaten/FOL/Datenblaetter/FOL-CC-xxx-CW.pdf
50W module.
I need to focus this into 0,05mm spot from distance 100mm. How to do that. Is this possible? I have some basic knowledge but I am new to optics.
I have read lot of...