small 0.1 laser

[neddlepoint2]

as you know Blu-ray discs are made with a (405 nm) and a DVD (650 nm) Lasers. I would like a disc made with a (0.1 nm) laser. drop down from (405 nm,100 nm and finally 0.1 laser. This would a huge amount of space that this disc could hold. is this an impossiblity?

Thanks.

[clyon]

No it would not work .1nm is not even light.


280 nm — near ultraviolet wavelength
380-420 nm — wavelength of violet light (see color and optical spectrum)
420-440 nm — wavelength of indigo light
440-500 nm — wavelength of blue light
500-520 nm — wavelength of cyan light
520-565 nm — wavelength of green light
565-590 nm — wavelength of yellow light
590-625 nm — wavelength of orange light
625-740 nm — wavelength of red light

http://en.wikipedia.org/wiki/Image:E...c-Spectrum.png

[eat_me_cool]

It all about the ability to make a laser with a shorter wavelength. I believe technology has been developed for ultra violet laser recently.
Initial cost will always be an issue, it delayed Blu-ray for years.

[Metalheadisme]

Originally Posted by clyon

No it would not work .1nm is not even light.


280 nm — near ultraviolet wavelength
380-420 nm — wavelength of violet light (see color and optical spectrum)
420-440 nm — wavelength of indigo light
440-500 nm — wavelength of blue light
500-520 nm — wavelength of cyan light
520-565 nm — wavelength of green light
565-590 nm — wavelength of yellow light
590-625 nm — wavelength of orange light
625-740 nm — wavelength of red light

http://en.wikipedia.org/wiki/Image:E...c-Spectrum.png

Well, light is light, regardless of the wavelength. For example, take radio waves- just long wavelength light.

The issue, however, is not cost, but physical limitations. 0.1nm is an angstrom which puts you at atomic dimensions- it's impossible to create such a high energy transition physical lasing conditions (like bragg refelctors or VCSELs) with known materials. Even if 0.1nm photons could be reliably generated, you then have the issue of all of your other materials working with it... I don't think anyone has created absorption spectra going out that far, but I could pretty much guarantee that you'd have massive destructive absorption. I don't even know if there would be a material that could reliably reflect it. We struggle right now to create sources below 100nm, and the only application for these sources is in etching. Never mind being able to lase these sources.

The future of optical media will be in holography, most likely making use of 3d diffractive elements to store data. It's a long way off though.

Enough dorkitude though. There's football on!

[WickyWoo]

Enough dorkitude though. There's football on!

I suspect you cut and pasted that from a real dork

No dork would be watching sports

[jorg]

Originally Posted by clyon

No it would not work .1nm is not even light.


280 nm — near ultraviolet wavelength
380-420 nm — wavelength of violet light (see color and optical spectrum)
420-440 nm — wavelength of indigo light
440-500 nm — wavelength of blue light
500-520 nm — wavelength of cyan light
520-565 nm — wavelength of green light
565-590 nm — wavelength of yellow light
590-625 nm — wavelength of orange light
625-740 nm — wavelength of red light

http://en.wikipedia.org/wiki/Image:E...c-Spectrum.png

atrual its already been done sorta using x-ray(its a wave length of light)
i forget who made it but its so far just proff of concept





http://www.x-rom.org/

[Metalheadisme]

Originally Posted by WickyWoo

I suspect you cut and pasted that from a real dork

No dork would be watching sports

Haha, during the day I'm an electrical engineering graduate student doing my PhD thesis in optics, so this is sort of my area of expertise.

At night time, I transform into my alter-ego which likes sports and trains in Muay Thai. :P

[Metalheadisme]

Originally Posted by jorg

atrual its already been done sorta using x-ray(its a wave length of light)
i forget who made it but its so far just proff of concept





http://www.x-rom.org/

Well, yes, that wavelength puts you in the X-ray zone, but x-rays are generated by atomic crystal lattices and require insane amounts of power, and the geometric scale requires impossible dimensions to control lasing. Even if a microelectronic source was available or possible (because remember, we're talking about things that could be made into a CE device - i have heard of x-ray tabletop lasers) it would require monolayers of atoms to create the bragg reflectors for lasing, possibly sub-atomic spacing which would be impossible. Just with power considerations alone, it might only be able to work on short pulses, which introduces even more issues with non-linear optics. I guess it may be possible in the end, but it really hinges on the feasibility of creating an x-ray laser on a small scale. If it was possible though, your power bill would sure reflect it, haha.