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It's perfectly possible to make a diode with any wavelength within the available range. You can't go any higher than the highest available (something like 520 for Nichia I think) and you can't go any lower than the lowest available (~380 for Nichia I think?), but any wavelength between those...

EDIT: Added pictures. Also, best I can remember I spent at least $450 on everything here. Make me an offer. I've lost interest in ever finishing this project, I think. I may yet pick it back up, but being honest with myself it's not likely. So, this is a feeler to see if anyone is...

^I'm sure it's quoting total magnification of the whole system, whatever that means. Quoting magnifications gets really tricky anytime you're incorporating a camera into the system, and then a subsequent display device. The quoted ???x number could well be the magnification at the eyepiece...

:beer: We're on the same page. It's just an interesting visual aid to see how we see things (pun intended).

A simple diagram to show some of what you're talking about: ellipses on the standard 1931 CIE diagram. From experiments, a human can't distinguish one color from another if the 2 colors are both inside the same ellipse. These ellipses (called MacAdam ellipses) are plotted as examples of...

Facilities are in Goleta, CA and Fremont, CA. I don't know exactly which functions are in each location, but the general split is that production is in Fremont while R&D is in Goleta. I don't know anything about their timeline as far as production, but this isn't an amateur operation. They...

A colleague and I joke quite often that with enough current in a short enough pulse you can make anything lase.

What's not to understand?

You're reading the chart wrong. 500mA is ~4.1 or 4.2 V on this chart. (this is the same chart you're looking at, correct?) If you care about power and voltage at a certain current, you go over to that current, then go up to the curve you're interested in. For power, go over to 500mA, up to...

WARNING to other readers: The following involves actual science. If you have previously had any negative reactions to science, do not read. If you experience discomfort while reading, discontinue reading and seek help at an accredited institution of higher learning. (Should be no problem for...

So I just did a recount, turns out some of my old sled stash got thrown out by the wife, so I have 27 PHR sleds available. One is missing the top lens assembly but all the optics on the bottom are intact, and the rest are complete except for the violet diodes as far as I can tell. I take it...

I have a full WhiteFusion kit, with everything needed to make a sweet laser (full heatsink kit from sightfx, diodes, Li-polymer battery, case, FireMyLaser driver board, the works + some more) that I still haven't ever finished assembling, it's about 75% done I think, but I haven't touched it in...

Total internal reflection, TIR, same reason a fiber optic cable works. But it works with any light in any medium where you have a boundary with a medium with a lower refractive index. Critical angle for TIR = arcsin(n2/n1). n2 is the refractive index of the lower index, outside medium (air in...

Kaai and Soraa have always been basically the same company. Founded by the same people, same locations, etc. IIRC, Soraa was founded first, Kaai later, with different missions. It was simply reorganized and the companies "combined" under 1 name, so now it's just called Soraa. It was all...

60um diode bare output would likely give you a hard-to-tame beam because of asymmetric emission, but as you say, it has FAC already. The whole point of fast-axis correction is to make the divergence more symmetrical and the emission easier to collimate, and it seems to work with this diode...

Generally speaking, it's the ratio that matters. If the beam is a circle, it matters less how fast it is diverging, optics can generally handle it. We run into trouble with diodes because the ratio between the divergences is high. You have to correct one axis to collimate the light well...

IIRC, it was originally chosen because it's a standard item in stock at all RadioShack locations. Way back in the day, a user called Daedal drew up a simple schematic for a linear constant current regulator, and he did it with parts that were all available at RadioShack so that most anybody...

University police are almost always real police in my experience as well, not rent-a-cops. At my old university, they were also a lower grade of officer in my opinion. Couldn't get into the highway patrol, couldn't get into the city police, couldn't get into the county sheriff's department, so...

Doesn't exist yet. They're trying to make it. The news story is about one particular group that got a cut of the DARPA grant to try to develop it.