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ArcticMyst Security by Avery
wavelength to price
- Thread starter 360freak
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jamilm9
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405nm is cheaper then blue and red is cheaper then blue.what do you mean.
Switch
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Wavelength is not proportional to price :
IR, red , blu-ray are cheap because they are mass produced diodes for disk media.Green is cheap because they are mass produced DPSS lasers mainly just for laser pointers/handhelds/lab lasers/laser shows, and is the most common and most efficient DPSS process.Blue and yellow(473nm and 593.5nm) are ridiculously expensive because their DPSS process is more complicated, less efficient, and not produced in such quantity as the greens.
So in order you have the most common wavelengths: blu-ray , blue , green , yellow, red(635nm/660nm) , IR(790nm , 808nm , 980nm etc...)
And relative price: cheap , expensive , cheaper , really expensive , even cheaper , cheapest.
Of course there's also DPSS red (671nm) which is also expensive.
And as for other less common wavelengths ,whether their diodes or DPSS(only talking about diodes and DPSS now...) , they're even more rare and thus even more expensive. :
IR, red , blu-ray are cheap because they are mass produced diodes for disk media.Green is cheap because they are mass produced DPSS lasers mainly just for laser pointers/handhelds/lab lasers/laser shows, and is the most common and most efficient DPSS process.Blue and yellow(473nm and 593.5nm) are ridiculously expensive because their DPSS process is more complicated, less efficient, and not produced in such quantity as the greens.So in order you have the most common wavelengths: blu-ray , blue , green , yellow, red(635nm/660nm) , IR(790nm , 808nm , 980nm etc...)
And relative price: cheap , expensive , cheaper , really expensive , even cheaper , cheapest.
Of course there's also DPSS red (671nm) which is also expensive.
And as for other less common wavelengths ,whether their diodes or DPSS(only talking about diodes and DPSS now...) , they're even more rare and thus even more expensive. :
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So in order from cheapest to most expensive
Infrared
Red
Green
Blu-Ray (Violet)
DPSS Red
Blue
Yellow
Yes?
Infrared
Red
Green
Blu-Ray (Violet)
DPSS Red
Blue
Yellow
Yes?
Switch
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Yeah, pretty much, when we're talking only about diodes and diode pumped.Though 1064nm could be more expensive than red.And of course it depends on the power.You can't really a lot over 100mW of Blu-Ray for example, so you can't compare a 400mW greenie with the blu-ray or red equivalent.Or say, a 300mW 635nm.Chances are it's out there, but no way is it gonna be cheaper than a greenie.
Switch said:Wavelength is not proportional to price :
So in order you have the most common wavelengths: blu-ray , blue , green , yellow, red(635nm/660nm) , IR(790nm , 808nm , 980nm etc...)
And relative price: cheap , expensive , cheaper , really expensive , even cheaper , cheapest.
Of course there's also DPSS red (671nm) which is also expensive.
And as for other less common wavelengths ,whether their diodes or DPSS(only talking about diodes and DPSS now...) , they're even more rare and thus even more expensive. :
That was a very detailed explanation. Simple topic, but I give it to you for your efforts. I give you +1 repz so you can eatz. [smiley=thumbsup.gif]
Basically, the wavelength of a laser has NOTHING to do with the price, it just so happens that the current technology required to make certain lasers at different wavelengths are different therefore so is the cost.
Correct me if I'm wrong, but isn't IR the most abundent LD because it was the first mass produced used in cd players?
http://www.lexellaser.com/techinfo_wavelengths.htm
Switch
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pwnstar said:
there is a pretty big range in IR diodes 808nm - 1064nm
and 1064nm will be more expencive than 808[/quote]
CD players are 790nm, and are out of your range ;D
IR diodes of different wavelengths were produced for dozens of applications , including pumping.I think CD players and writers were definetly a huge part of that mass production.And it just so happens that IR was one of the first diodes to be developed when they started making CD players.Otherwise they would've just used red directly.
Blu-Ray is the next step, so your never gonna see optical media drives with wavelengths greater than 405nm being developed from now on.When it comes to disk players, shorter wave is better, so the next ones are probably gonna be UV.
Switch
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And thanks Ace, I was kinda getting hungry ;D
(didn't allow me to modify post :-?)
(didn't allow me to modify post :-?)
pwnstar
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ahh my bad,
I deleted my post
lol this was right before switch^^^
"there is a pretty big range in IR diodes 808nm - 1064nm
and 1064nm will be more expencive than 808nm"
I deleted my post
lol this was right before switch^^^
"there is a pretty big range in IR diodes 808nm - 1064nm
and 1064nm will be more expencive than 808nm"
Razako
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iewed said:
I think green diodes are the most expensive ATM. A few thousand for a couple mW's (Or so I've heard), and don`t forhet about CO2 lasers.[/quote]
c02 lasers aren't bad. You can get 20+watts for $1,400
VW
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The thing with DPSS lasers is that they require carefully coated crystals aligned to a fraction of a mm and any sudden knock or scratch or drop of the equipment can result in complete failure for that particular unit. Like others have mentioned, green is by for the most common and easiest to produce in a DPSS laser, which is why they're so cheap. Blue light is far more difficult to create with a DPSS laser which is why it's more expensive, and then yellow/orange again is even more complicated, which is why you only see such low powers. Red DPSS I would imagine is much easier to produce than blue or yellow, but the technology is new which is why it's expensive. So really all it is, is an unfortunate cercumstance that those particular colours of light are harder to produce outside of diode lasers, which are limited in colour and quality anyway.
diachi
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As far as I know, there are green diodes, but they are really rare, and expensive aswell as low powered, there are no yellow diodes or blue diodes as far as I know .
Diachi
Diachi
