So does this become a new display type? Laser TV?
NIST scientists create 'any wavelength' lasers
131–140 of 201 posts
Re: NIST scientists create 'any wavelength' lasers
#132Title is misleading. This is about integrated optics that can do "computation" on the frequency of laser input using all kinds of nonlinear optical effects.
Re: NIST scientists create 'any wavelength' lasers
#133what a waste of money!
just kidding this is amazing
Re: NIST scientists create 'any wavelength' lasers
#134Title is misleading. This is about integrated optics that can do "computation" on the frequency of laser input using all kinds of nonlinear optical effects.
I don't think so- seems like they demonstrated a supercontinuum source, which is a pretty good approximation of "any wavelength" laser. Pretty cool on an integrated chip.
Re: NIST scientists create 'any wavelength' lasers
#135> When it comes to information transfer and processing, light can do things that electricity can’t. Photons — particles of light — are far zippier than electrons at working their way through circuits. Electrons themselves don't move at the speed of light, but information transfer (i.e. communication) via electrons does happen close to the speed of light. A subtle, but important, distinction that's often misunderstood…
About 0.6c for cat6 cables, different types of cables can be slightly faster. Speed of light in fiber is also 0.6c due to the refractive index of the core.
Re: NIST scientists create 'any wavelength' lasers
#136Earlier quoted context omitted.
The whole idea of colour and light frequency is fascinating. These are just frequencies of light, but the subjective experience of them is so much more. And the whole thing of my perception of "red" or what I call "red" could be very different to someone else's subjective perception. But we would both call it red and associate it with the same thing, fire, love, heat, danger etc.
This is true, and illusionary at the same time. While our precise perception of red may not match, the interplay between colors is such that people perceived them to go together, or clash, etc, in a somewhat consistent fashion. This means that, over the general population the perception of color is very similar from person to person. Ignoring genetic defects.
I worked in a creative shop, so we sold a lot of colors of ink, paint, crayons etc.
It’s interesting to watch people trying to pick “red” when there is like a whole gamut of red. Not only that, but it depends on the lighting around as well. (Is it evening, day, what kind of lighting fixtures are there?)
Creatives usually have 10 kelvin white boxes for a neutral color experience. A bit like audio folks have calibrated monitor speakers.
Re: NIST scientists create 'any wavelength' lasers
#137Everyone talking about magenta and brown, but you can see an illusory color right now even without lasers! https://dynomight.net/colors/ behold, some kind of hyper-turquoise
> Weird stuff will happen, but stay focused on the dot. Blink if you must. It takes one minute and it’s probably best to experience it without extra information i.e. without reading past this sentence.
well that was a waste of fucking time
Re: NIST scientists create 'any wavelength' lasers
#138Earlier quoted context omitted.
In electric circuits, information is transmitted through the electric field, which itself is close to the speed of light.
Nope, it's 1/2 - 2/3 the speed of light depending on the metals used.
You're both wrong. It's true that the first whisper of movement travels at the speed of light, but the time until the flow stabilizes (which you WILL need to wait for in electrical chips) is actually slower than the "speed of electricity".
Oh and also: currently the idea behind on-chip lasers is interconnects that don't have this limitation. For example, PCIE is looking to build optical interconnects, which will do the equivalent of bringing every GPU 10x closer to the memory.
Optical computation would require that light switches light transistors on and off, which doesn't seem to be possible with this technology. This is optical computation in the sense of allowing light beams to be produced according to formulas.
Re: NIST scientists create 'any wavelength' lasers
#139With two of these you should be able to display any color in the CIE colorspace.
Re: NIST scientists create 'any wavelength' lasers
#140Everyone talking about magenta and brown, but you can see an illusory color right now even without lasers! https://dynomight.net/colors/ behold, some kind of hyper-turquoise
The whole idea of colour and light frequency is fascinating. These are just frequencies of light, but the subjective experience of them is so much more. And the whole thing of my perception of "red" or what I call "red" could be very different to someone else's subjective perception. But we would both call it red and associate it with the same thing, fire, love, heat, danger etc.
>subjective experience of them is so much more
It's just that our eyes kinda suck and evolution had to make up in buggy software.