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  1. J

    CO2 optics

    So I was looking around my garage recently and realized I have almost everything I need to build a small flowing gas CO2 laser. What I lack are the optics, HR and a ZnSe OC. Anyone got a line on these for a reasonable cost? Looks like I can pick up new stuff for ~$200, but something salvaged...
  2. J

    New toy

    Just received the Melles Griot 05-LGP-173 that I picked up for 10 bucks on ebay. I just happened to recognize the model number as a 543nm green head. It was as-is and when it arrived it made an arcing sound and glowed but no beam. Popped off the end cap and replaced the insulation where the...
  3. J

    Repairing HeNe power bricks

    Impossible right? :) I've been working lately on repairing and reverse engineering some of these potted bricks. Thought some here might find this interesting, more to follow as I go. Thanks to Sam for adding my efforts to the FAQ, and for donating some more dead bricks. Sam's Laser FAQ - HeNe...
  4. J

    IR filters on cheap greenies

    Has anyone ever measured the IR output of some of the cheap green pointers? I know the good ones have a high quality IR filter to block the substantial amounts of invisible IR but with prices dropping down into the $5 range I have to wonder if they might skimp on this. Ironically, safety glasses...
  5. J

    Adjustable mirror mounts

    I whipped up a design for a simple 3 point adjustable mount for mirrors and dichros. Working with my machine shop buddies to get a handful of them made for me and then if there's enough interest I think I could convince them to run a batch of these to offer to others. These would be CNC milled...
  6. J

    Combining diodes

    Blue was always the problem before, but now I've got plenty of blue to spare and the challenge is getting enough red. I know I can combine a set of red diodes with a polarizing cube but I'm curious if works to combine the diodes *before* collimating, then put the resulting beam through a single...
  7. J

    Finished 445 build

    Finally got one of these all put together in a nice housing. I machined a block out of a scrap of solid aluminum stock and reamed it out so I could press in a diode housing I got from an ebay seller. This saved the hassle of drilling and tapping several difference sizes of precision threads and...
  8. J

    445nm optics

    Apologies if this has been gone over a zillion times. I've been pouring over threads here for days and feel like I've only scratched the surface. What are the recommended optics for getting a decent quality beam out of one of these A140 diodes? I got a cheap module on ebay which appears to have...
  9. J

    Group buy interest?

    I have two A140 diodes left in stock that I can offer here for $40, otherwise I'll place them on ebay sometime in the next few days Once those sell I'm strongly considering doing another buy so I can have another projector to strip apart and play with. I'm thinking $40 shipped for the first...
  10. J

    Casio projector bits

    I know there must be mountains of this stuff out there from those who have arranged group buys. I'd like to keep the remains of the projector I bought intact for some experiments so I'm looking for a laser diode driver PCB from another one to do some experimenting with. I'd also be interested in...
  11. J

    A140 diodes in stock

    I have some A140 diodes left that I can sell for $40 shipped anywhere in the USA via USPS. I can do international shipping at additional cost depending on where to but YOU are responsible for making sure these are legal to ship to your country as I will state the true contents and value on the...




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