Make sense, problem is: I do not even know the manufacturers of all the parts, let alone the properties of each one. I do not mind the power loss as long as the back focal plane interferometry still works so I will have to try that out, first (the diode is being repaired right now).
Anyway...
Hi,
I'm currently recalibrating an optical tweezer for my undergraduate thesis. The alignment did turn out well so far but I'm a little bit concerned about the power loss within the microscope (here's a picture of the relevant part, without prisms).
I read in a paper that 20 to 100mW are...