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Recent content by Arcygenical

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    Auto Full 16 millions colour, RGB White laser handle DIY

    Nah man, In terms of HEAT capacity and dissipation, brass has around HALF the coefficient that aluminum does, which is already mediocre at best compared to copper, and to a much more tiny "diminished return" silver sink. Most aluminum alloys, yes, are 94% but have, at best 60 % of the transfer...
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    Auto Full 16 millions colour, RGB White laser handle DIY

    There's really no reason to use silver over copper when it comes to mw/mk... But it sure looks pretty. It's very easy to electroplate copper with fine silver, though - I do it often enough, and skip the usual "plate to nickel first" stage. Electrolyte (Sodium carbonate, made from baking soda...
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    7W 445nm VS. 4W 470nm

    I will say that around 125mw of output, the ~488nm diode I'm running looks about as bright as a ~800mw 445nm. That's to my eyes, with some degree of tritanopia... Not sure how that affects perceived output, as I'm not fully colour blind to blue wavelengths.
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    NDS-7175 Skyblue LD ?

    Yeah I'm ready to drop a few hundred into a SS yellow diode, just don't want to import a full pointer. Can't wait until we get these in the triple digits. The reason I got into this hobby was watching telescope AO's as a kid. As for the 7175, at this wattage, the tradeoff against single mode...
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    Dye Laser Comes to Life!

    This is my "most anticipated to see a result" thread of 2019. I've thought about messing around with something similar, but I know I don't have the manufacturing capability to do so at my current domicile. I miss having 3 axis CNC machines, and not to mention the ability to acquire pure ethanol...
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    Beam combining - effects of different wavelengths on resultant human perception.

    Chroma looks great, but for the life of me I can't get it to run under x64 windows 10... Even with the proper Mathlab compiler (7.11) and environment variables set. Bah. On an unrelated note... Mathlab is a terrible runtime. My god. I thought JRE had that award. Real PITA without backward...
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    Beam combining - effects of different wavelengths on resultant human perception.

    Replied in Quote. Thank you for the discourse. I always appreciate a good hypothetical dicussion about light, especially when I'm only starting to wrap my head around the intricacies of it. This makes obvious sense. As we approach a central wavelength of 550-560nm (depending on the...
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    Beam combining - effects of different wavelengths on resultant human perception.

    Well, I don't see a 589nm beam in my near future, mainly because it's unlawful to import - and Frankly, I just don't want to deal with that right now. I was considering metal-printing a mount to create a simple red+green combining module, throwing a dichro in, and calling it a day. Can still...
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    Import 50mw Yellow into Ontario, CA?

    So, I've never actually imported a fully built pointer into Ontario, Canada before. I'm not even certain it's legal to do so, and I'm looking for advice in this area. I've always purchased the parts, hosts, and bar stock and milled the pointer myself, done some testing, and later disassembled...
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    589 MilkyWay

    Eugh. This is my dream laser pointer, for the whole Adaptive Optics dye lasers they use at observatories. Very cool OP. Super, super jealous. How many mw? My next pointer is going to be a 589nm, when I get a tax return back, I think.
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    175ma GH04850B2G 488nm Build

    Yes, this particular diode has a Vf of 6-7.5, so I can absolutely see why the waste heat could be a concern. P=IxV, yields me around 1.8w total draw from the cell, which is still a lot of heat to be dissipated by the driver and diode. The driver IC has been heatsunk as well in every one of my...
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    175ma GH04850B2G 488nm Build

    Thank you for the reply. That helps a lot, as I have no LPM to measure output; I was just assuming that 175ma would yield around 100mw. I will modify it up to between 190-210ma and see if I can gain a few notches in visual output. If not, I will titrate back, to ensure temperatures are well...
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    WHY so many 'necro posts' lately.

    Been browsing and lurking this forum for around 4 years, and the black theme is so much easier on the eyes, especially late at night. Also, the other forum I post on regularly, [H], has a similar grey colour scheme, and it just feels at home! As for the necro posts... Well, this forum is...
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    Why is my 200mw red laser dims

    What is your laser. Did you build it, or did you buy it? Are you sure the driver output is correct? Are your batteries correct? Are you heatsinking correctly? Etc. Etc. We need a whole bunch more info.
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    My new build $495nm and 515 nm laser

    The 495nm blue is an absolutely amazing colour. Fantastic. What's the 495nm diode's part number (model # or whatever). Also, where can I get one!