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  1. pullbangdead

    Another Breakthrough at CERN

    Ummmm...what? As best as I can tell, I think you have somehow managed to combine the ideas of antiparticles/antimatter, vacuum fluctuations, quantum entanglement/spooky action at a distance, quantum tunneling, the Copenhagen interpretation/wavefunction collapse, superposition, energy...
  2. pullbangdead

    1W pulse, .5W CW 638nm diode

    Multimode is all relative. Single-mode diodes are often 1.5um wide. If you go any wider, you can get multimode, and the wider you go the worse it gets. If you go to, say, 3um, it's not that bad really. The 445nm diodes we have now are ~15um wide, still not that awful, relatively speaking...
  3. pullbangdead

    My god, it's blooooooooo

    ^There's really no way to know for sure. Likely? Yeah. Surely? Nah.
  4. pullbangdead

    WickedLasers on Channel 11 News.

    Your arctic has 1.36mRad divergence? Can you show that calculation? And I assume that's the slow-diverging axis, what's the fast-diverging axis as well?
  5. pullbangdead

    Research/goggles?

    If you're looked for OD3-level protection from blue light, I might suggest the AL3 filter, available from Noir or, my preference, OEM Laser Systems (the proprietor of which can sometimes be found lurking these parts, his name if FrothyChimp). The AL2 and AL3 are listed together on Noir's site...
  6. pullbangdead

    WickedLasers on Channel 11 News.

    He wasn't completely clear in his explanation and didn't use the most precise terminology he could have, but lasers absolutely do have a much higher power density than the sun. It's not "more powerful than the sun" in total power output in all direction, but the power density (as in power per...
  7. pullbangdead

    Anyone seen this 465nm laser?

    I've worked with 465nm lasers. Remember, diode lasers have been made/can be made in every wavelength between 405nm and 531nm, and lower than 405nm into the UV as well. 465nm laser diodes are quite similar to the 445nm diodes so popular now, made out of mostly the same materials and such.
  8. pullbangdead

    Why is Blu-Ray called Blu-Ray?

    How about saying it has a lower "luminous efficacy", just a generic term that says it's not as good at emitting light as GaN is. As far as efficiency of GaN vs. wavelength, I do have an older image showing the idea of the "green gap" (attached), which shows the external quantum efficiency (EQE)...
  9. pullbangdead

    A message from our company

    Oh dear. 973-361-5400 is a general Casio number for a location. Call it, it has an automated menu that can send you to customer service, sales, HR, or directly to any person at the site, quite possibly any person who works for Casio world-wide, though I didn't try it. Not sure where that...
  10. pullbangdead

    Anything but iPhone (thoughts on Desire, Galaxy S)

    You NEED WebOS. I think WebOS may already be what you want Meego to be in the future. Fully open linux operating system with a very active developing community that is actually supported by Palm (instead of squashed like Apple). The cards metaphor is by far the best multitasking solution...
  11. pullbangdead

    Why is Blu-Ray called Blu-Ray?

    First, it's an indirect bandgap. That isn't a killer by itself, but it's a strike against any material when you're trying to emit light. It can work, and many indirect bandgap materials are used for optical applications, but when the competition is GaN which has a direct bandgap, then it's...
  12. pullbangdead

    What actually occurs with color blending?

    Haha, yes, there is...but it's a bit more complicated than just "a formula". There is an entire mathematical framework built upon the theory and science of color perception in the human eye, and the approaches used today have been developed literally over the last 80+ years (the first big...
  13. pullbangdead

    Cyan lasers?

    Cyan lasers are quite pretty. Diodes in that whole 470-490 nm range are beautiful. I like the 473nm DPSS in that range of course, but it's not my favorite of that section of spectrum.
  14. pullbangdead

    Why is Blu-Ray called Blu-Ray?

    Yep, that's pretty much exactly it. For green, it turns out that by doing many of the same things they did to go up >40nm from violet to blue, it turns out you can go even farther just by doing many of the same things: "tweaking" the materials and the device structure. GaN is amazing stuff...
  15. pullbangdead

    What actually occurs with color blending?

    Don't think of it as a color line with violet on one end and red on another, think of it as a color wheel. So take your line, roll it up, and you find blue and red next to each other, and between them you find purple. Red + blue = purple. Red + green = yellow. Blue + green = cyan. Additive...
  16. pullbangdead

    What actually occurs with color blending?

    Your eye has "red", "blue", and "green" cones. A green photon stimulates the green cone, so you see green; a red photon stimulates the red cone so you see red, etc. Yellow photons stimulate both the red and green cones, so you see yellow, Your eye/brain is calibrated such that if both the red...
  17. pullbangdead

    Changed My Avatar...

    On second thought, that thing looks like it's already well on its way to becoming Mothra even without the radiation, maybe we shouldn't nuke it....so instead just
  18. pullbangdead

    Direct green lasers

    I wouldn't say epic power. For a single mode diode, you're not going to get a ton of power. The blue diodes we have are multimode for that reason, to get more power. It's all relative, of course, but you can basically say that if it's single mode, it won't be amazing power. Microvision's...
  19. pullbangdead

    Direct green lasers

    Nope, it's not. I went back and looked again. The AAXA projector is the DLP-based projector (well, not actually DLP, but LCOS, similar idea though, where the laser is simply a light source and another piece of technology is forming the whole image at once). The Microvision Showwx is a...
  20. pullbangdead

    Direct green lasers

    No. Remember the casio diodes are multimode for more power, and that's ok because they're just the lightsource for a DLP chip. This projector is a ''flying spot'', so it needs a well-collimated clean dot. So it'll be single- mode. Unless this isn't the projector I was thinking of, but I think...


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