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WTB: 1W green - not a huge host

O

Opentoe

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I purchased one of Yob's blue lasers and like it a lot. I'm trying to see if I can find a green 1W similar to that size and of course, quality. Nothing can beat the price I paid for the blue, but I won't spend hundreds of dollars. So if anyone knows where I can score a 1W green, shoot it out. I appreciate it!



***Update***
I have found out why green lasers are more expensive the others. I do not need a 1W green. That's for sure. I'm looking for a green I guess 300mW to 500mW. The search is on.....
 
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DTR

DTR

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If you really want a 1W green be prepared to come to the table with minimum of $1000 if that cheap and it won't be a small host. If you are just looking for something comparable in brightness to your Yob build you can find a 200mW-300mW green.;)
 
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ARG

ARG

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You can pick up a 1W green labby for 750$ from meirlight, for a portable though I think the max power I've seen is 900mW in a BIG host from CNI
 
joshshermannn1

joshshermannn1

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i heard someone ordered a 600mw pl-c from jetlasers and it peaked almost 1w
not that big of a host either
 
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Opentoe

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Can the experts explain why the blue ones are much cheaper then the green? Are they easier to make or design or something? Really, I didn't know there was a difference. I'm very curious now.

Michael
 
ARG

ARG

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Green lasers are DPSS which requires an IR pump diode going through crystals to produce green light. Blue lasers can easily be made with just the diode and a lens. Also, the diodes are readily available. This is only a simple explanation.
 
AAlasers

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Blue lasers use a diode, put through a single collimation lens, to produce a beam. Green lasers use a method known as frequency doubling. A green laser is "DPSS" or Diode-Pumped-Solid-State. Its basically a high powered 808nm (NIR) laser diode put through a crystal Nd: YVO4, or Nd: YAG (With high powered lab units), and a "KTP" (KTiPO4). The Nd: YVO4/Nd: YAG shifts the wavelength inside of the laser from 808nm to 1064nm. The KTP frequency doubles (It doubles the frequency of the light, hence reducing the wavelength by a factor of two; producing 532nm), and then the green light (532nm) is expanded, and collimated. As such, a green laser is more expensive and complicated to produce. A one watt blue laser is simply a one watt diode. A one watt green laser is actually a 5+ watt diode put through the process explained above.

AAlasers
 
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Opentoe

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WOW, very interesting. That's why I don't see many high powered green. I know the green certainly looks brighter, but when just comparing to how hot the laser gets. For example is a 300mW green the same heat as a 300mW blue? I know for sure the green will be brighter, but what about the physical heat? Thanks!
 
AAlasers

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The blue laser will fell hotter because materials absorb lower wavelength light better then higher wavelength light, as a general rule. And although the output power is the same.. blue lasers will be bombarding the material with more photons, as the frequency is higher. (All of this is assuming the green laser and blue laser will have the same sized dot). However, the actual amount of heat (in photons) emitted from each laser will be the exact same. The blue will just burn things better, and consequentially feel hotter when the light comes in contact with skin.

AAlasers
 
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vincenthooi

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the blue laser of equivalent wattage will not be bombarding the material with more photons. it will be bombarding the material with less photons, but more energy per photon
 
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AAlasers

AAlasers

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vincenthooi said:
the blue laser of equivalent wattage will not be bombarding the material with more photons. it will be bombarding the material with less photons, but more energy per photon
Click to expand...

The amount of photons will be the same, but the energy per photon will be greater. I got it mixed up.
 
Alexizupinhea

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Well, I think the MAIN reason by far, regardless of type of technology or not, is that the blue diodes are MASS PRODUCED. Blue diodes used to be extremely rare and very expensive (a 5mW pointer of "Blue" was $400 minimum just a few years ago - though it was 473nm, not 445nm). Of course the technology with blue diodes was complex as well, as with all new inventions. The reason why it is so cheap, is because they were put into home theater projectors, and therefore the large company Ca$io has had enormous amounts of these diodes made.

Edit: Then again, you are right that for cost of materials, DPSS is of course more expensive. 473nm was DPSS as well, which can easily contribute to it's higher cost. But above all, if DPSS products were mass produced, the cost could easily be in the sub $100 range for such high powers. But applications for this are not quite needed (yet).
 
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Opentoe

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Alexizupinhea said:
Well, I think the MAIN reason by far, regardless of type of technology or not, is that the blue diodes are MASS PRODUCED. Blue diodes used to be extremely rare and very expensive (a 5mW pointer of "Blue" was $400 minimum just a few years ago - though it was 473nm, not 445nm). Of course the technology with blue diodes was complex as well, as with all new inventions. The reason why it is so cheap, is because they were put into home theater projectors, and therefore the large company Ca$io has had enormous amounts of these diodes made.

Edit: Then again, you are right that for cost of materials, DPSS is of course more expensive. 473nm was DPSS as well, which can easily contribute to it's higher cost. But above all, if DPSS products were mass produced, the cost could easily be in the sub $100 range for such high powers. But applications for this are not quite needed (yet).
Click to expand...


I'm still on the prowl for a nice green. 500mW or less.
 
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