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  1. Ramsey_innovations

    Checking in after a Long time away, and sharing my drone product lineup

    Thanks a lot guys! I really appreciate the comments. Yeah the folding design is kind of dual purpose, minimizes crash damage and makes it truly "pocketable" I'm working on testing a control board that works with a smartphone app to allow the user to decide whether they want to travel light and...
  2. Ramsey_innovations

    Checking in after a Long time away, and sharing my drone product lineup

    Well it's been a very long time since I last checked in here. Life situations, having 2 kids, going through some rough financial patches and dealing with some significant car accident injuries have kept me away. The last time I frequented here I was just beginning the patent process on a modular...
  3. Ramsey_innovations

    How to protect eyes from white Lasers?

    Remote viewing via video monitor is truly the only safe way to view a spectral combined laser other than some very specialized and expensive goggles. This is the way we've done it for years at Ramsey Innovations, especially during systems testing. Spectral beam combining can be very dangerous so...
  4. Ramsey_innovations

    Let's see how fast you can light a candle!

    I would definitely agree, many factors are involved. I've lit candles with 600mw of 405nm. The energy density just has to be high enough along with a proper fuel and oxygen supply. I find that a very slight breeze or draft can help things ignite well. I believe that just about any laser that...
  5. Ramsey_innovations

    optical head with plexiglass frame

    Thank you very much for the compliments! They truly are best friends, James has grown so fast and now my youngest, Anthony is already the same age as James was in that pic.....wow time flies!!!
  6. Ramsey_innovations

    SMALLEST (!?) 1.5W mobile laser

    WOW, aluminium shell? Must feel very nice, more substantial than plastic or carbon. Did you mill that as well or formed sheet metal? I'd love to have something like that.:gj:
  7. Ramsey_innovations

    SMALLEST (!?) 1.5W mobile laser

    Ok, is the outer frame moulded plastic or painted carbon fiber? Either way it looks well made. I'm guessing the heat sink is a milled aluminium piece.... Sorry for the questions, just curios.
  8. Ramsey_innovations

    SMALLEST (!?) 1.5W mobile laser

    Awesome, looks very James Bond like! Good old German engineering :beer: Could we possibly have a look at the inner workings? Are you using a Li-po pack for power supply?
  9. Ramsey_innovations

    optical head with plexiglass frame

    Ah it seems we have a quite a bit in common then.... I have two boys and a very supportive and understanding wife as well. Yes compliments can go a long way, helps to motivate future work. Now that we are official friends here, you can take a look at my private album. There you will find several...
  10. Ramsey_innovations

    optical head with plexiglass frame

    As fas as fibre coupling goes, I have not personally done this for combining but in our applications it would likely reduce efficiency due to the added necessary optics for collimating. There is a gentleman local to me who is a leading expert on combining. His preferred method is to fibre couple...
  11. Ramsey_innovations

    optical head with plexiglass frame

    Well that was one of the potential issues with that method....i guess if the gap is minimal, but then adjustment is limited.... One other potential issue is de-alignment due to thermal expansion (creep). Adjustment via set screws in that type of configuration is often seseptable to this because...
  12. Ramsey_innovations

    optical head with plexiglass frame

    Ah so the modules won't be tightly seated against the heat sink then. This method will work but has it's obvious downfalls.....anyway it looks pretty cool so kudos to you :beer:
  13. Ramsey_innovations

    optical head with plexiglass frame

    Very neat looking design! Is there any way of adjusting alignment?
  14. Ramsey_innovations

    DIY - Two-Colour Combiner Optic Project - for the C2

    Wow that's pretty complex. It looks cool but to be honest I'm not too keen on the pedestal that is supposed to flex with the force of the set screws. To be honest I don't think it will allow for enough movement to effectively combine, especially in the far field. It may be worth experimenting...
  15. Ramsey_innovations

    DIY - Two-Colour Combiner Optic Project - for the C2

    Yes, that's correct but there may be some variation from host to host so like you said, don't base the final design on these measurements alone. If you look at the images in the album I uploaded them to (http://laserpointerforums.com/members/ramsey_innovations/albums/explorer-4x4/) the image...
  16. Ramsey_innovations

    DIY - Two-Colour Combiner Optic Project - for the C2

    here you go hope this helps:wave:
  17. Ramsey_innovations

    DIY - Two-Colour Combiner Optic Project - for the C2

    Rhd, just wondering if your going to have the two lasers individually switchable (three color options, assuming spectral combining) or if it's going to be both on or off only? I have this...
  18. Ramsey_innovations

    DIY - Two-Colour Combiner Optic Project - for the C2

    That's a nice looking design, but as you've stated thermal dissipation is going to be an issue with the limited contact between the structure and modules. If your only planning on very short duty cycles you'll probably be fine, however you will likely need to re-adjust the alignment from time to...
  19. Ramsey_innovations

    Volume Bragg Grating?

    Yes, that makes perfect sense. I now see the potential issues with diode/semiconductor based lasers. I hadn't considered the wavelength variations from diode to diode as well as shift during operation. It makes sense though since the VGB's are so wavelength discriminatory as opposed to say a...
  20. Ramsey_innovations

    Volume Bragg Grating?

    Thank you for the information, that sounds congruent with some things I have read. Basically the main advantage is efficiency. What about the limitations with the number of beams that can be combined though? I have heard, at least with holographic VBG's, that it may be possible to combine tens...




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