Laser optics mirror question

[powerfade]

Hi there. I have a question about quantity of mirrors to reflect the beam. I have rebulit the gantry on a 4'x5' table that I have finally started working on again after a year or so hiatus. I am contemplating mounting the laser below the table and then bouncing the beam up, over across, across and then down, which would effectively use 5 mirrors. My question is, would this be adviseable and how much power loss would occur and difficulty with alignment?? The laser is a 100w glass tube reci laser. I see to remember hearing about 3 watts of power loss per mirror, but don't remember right off hand.

Thanks everyone..
Chris

[Tech_Marco]

Not a good idea. The lost os power is not just by 3~4 watt per mirror but the lost would be by % after % after % after % after %, just like a compound interest lost to a mortgage. Plus, the alignment of beam is not easy without an great effort for 5 mirrors! So, double thinking it before doing so. Don't want to see you got frustrated and become an unhappy customer

Marco

[Tech_Marco]

Sorry my mistake. Just got back from China and my eyes still fuzzy

What you want is a "Si" mirror with 20mm in diameter. The default mirror comes with K40 is "glass base" with gold plated.


Marco