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  1. J

    PBS beam combining two NUBM38s

    What are the typical power limitations when it comes to combining beams using PBS cubes? I see them advertised commonly with power ratings of 5W or 8W but am not sure if that is per incident beam or overall. I suspect that if multiple beams were incident upon a cube (as we commonly see with...
  2. J

    Collimation - Down the rabbit hole

    Or at least it feels that way... A while ago I got my FAP800 up and running and managed to melt some powdered Aluminium and Stainless steel with it - happy days. However, I did this with the collimator I purchased from Ebay. At the time what I didn't realize was that my collimator was set 2...
  3. J

    Variable optics - Liquid lenses

    This is a bit of a broadly focused topic on something I discovered the other day. I'm not sure if this exists in the realm of commercial laser optics but thought I might throw it out there to see what you guys think. There may be a good reason as to why it hasn't surfaced, but other than a...
  4. J

    Calling all FAPpers - FAP800 - precautions and driving advice

    So I've been doing some digging on these forums and elsewhere, learning that these units are VERY susceptible to static. My laser has arrived but I'm reluctant to even remove it from the box knowing that I could potentially kill it. How do you guys go about handling these units? Do you always...
  5. J

    XIRI fiber patch cables?

    Has anyone had any experience with this brand? I've just purchased a secondhand FAP800 laser diode array and need to acquire a suitable patch cable. Can anyone vouch for their quality?
  6. J

    Determining material opacity

    Hi there I figured this may be the best place to start, hoping to tap into some knowledgeable people here as I'm a newbie to the physics behind lasers. How do you determine a materials opacity relative to a particular wavelength of light? The reason I ask is I'm attempting to build a 3D...