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HELP!!! i need a blue laser

Switch said:
It's not more powerfull....30mW is 30mW in terms of burning. It's only more powerful in the war against aids and cancer (ok ok, oversaturated joke :P)
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Ok, so with someone that doesn't want to burn money, no pun intended (ok, slight pun intended), a blue laser is NOT the way to go. From what I've seen, green is probably the easiest colour to get... it is just because it's easy to make? I would assume green's proliferation of the market is kind of the opposite of blue... or am I wrong?

Edit: Also, Razako, your avatar is like watching a lava lamp... I find it mesmerizing.
 





RickyTheFish said:
[quote author=Switch link=1206666353/0#14 date=1206667387]It's not more powerfull....30mW is 30mW in terms of burning. It's only more powerful in the war against aids and cancer (ok ok, oversaturated joke :P)
Click to expand...

Ok, so with someone that doesn't want to burn money, no pun intended (ok, slight pun intended), a blue laser is NOT the way to go. From what I've seen, green is probably the easiest colour to get... it is just because it's easy to make? I would assume green's proliferation of the market is kind of the opposite of blue... or am I wrong?[/quote]
Red=most common and cheapest per mw.
Green=getting more common and cheaper every day.
Blue=Very uncommon and expensive. The fun thing about having one is that you can amaze people since no one has ever seen them before.
Yellow=Least common and most expensive per mw. It isn't that popular of a color and the supply is limited.
 
IR is the easiest to make, followed by red(these are direct diodes).
Comercial blue, green and yellow are DPSS (IR diode + crystal + another crystal) Green is the most efficient , meaning a 1W IR diode can give you 200mW of green with good crystals, that's 20% efficiency.Blue and yellow are something close to 1-3% efficient, and that's why they're available in such low powers.But they overheat just as much as greens because they use the same diodes.

Forgot about the now mass produced blu-ray(violet color) laser that also comes in direct diode form, no crystals needed, and is getting cheaper and cheaper.
 
Razako said:
Red=most common and cheapest per mw.
Green=getting more common and cheaper every day.
Blue=Very uncommon and expensive. The fun thing about having one is that you can amaze people since no one has ever seen them before.
Yellow=Least common and most expensive per mw. It isn't that popular of a color and the supply is limited.
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So, is it possible to modify a pen-sized crappy laser pointer to anything worthwhile? I have a 2-AAA sized red laser pen that is probably somewhere in the range of 1-5mW. Can this be made any stronger, or is my best bet to either purchase something or custom make one?
 
Switch said:
IR is the easiest to make, followed by red(these are direct diodes).
Comercial blue, green and yellow are DPSS (IR diode + crystal + another crystal) Green is the most efficient , meaning a 1W IR diode can give you 200mW of green with good crystals, that's 20% efficiency.Blue and yellow are something close to 1-3% efficient, and that's why they're available in such low powers.But they overheat just as much as greens because they use the same diodes.
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But, don't most lasers have IR filters? I thought IR was bad.
 
If you are using an IR diode to make another color, then the rest of the IR you don;t need and needs to be filtered so you have a more pure green/blue/yellow beam.So IR is bad in a DPSS process, and yes it is bad for your eyes if it is of a high enough power.Bottom line: high power=bad for eyes.So be carefull whatever the wavelength/color.

You can't modify your low powered red.Best bet is to make one from a DVD burner diode like most of us do, or buy the DX200 red for 50 bucks. :P
 
Switch said:
If you are using an IR diode to make another color, then the rest of the IR you don;t need and needs to be filtered so you have a more pure green/blue/yellow beam.So IR is bad in a DPSS process, and yes it is bad for your eyes if it is of a high enough power.

You can't modify your low powered red.Best bet is to make one from a DVD burner diode like most of us do, or buy the DX200 red for 50 bucks. :P
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Heh, I just recently bought my DVD burner, I'm not taking it apart just yet =) Also, my low-mW red pen is quite visible... is the green even more visible? From what I understand, green is easier for the eyes to see, and thus appears brighter... is this true? If I was gonna front the money for a laser, I'd like it to be noticeable =)

Edit: I should say, the red dot is visible, but no beam is visible... can higher powered lasers show the beam without some interference such as smoke? Or is that just basically a given that you're just going to get a point of light and no beam? Some of the videos I've watched show a very noticeable beam.
 
RickyTheFish said:
[quote author=Switch link=1206666353/15#21 date=1206668072]If you are using an IR diode to make another color, then the rest of the IR you don;t need and needs to be filtered so you have a more pure green/blue/yellow beam.So IR is bad in a DPSS process, and yes it is bad for your eyes if it is of a high enough power.

You can't modify your low powered red.Best bet is to make one from a DVD burner diode like most of us do, or buy the DX200 red for 50 bucks. :P
Click to expand...

Heh, I just recently bought my DVD burner, I'm not taking it apart just yet =) Also, my low-mW red pen is quite visible... is the green even more visible? From what I understand, green is easier for the eyes to see, and thus appears brighter... is this true? If I was gonna front the money for a laser, I'd like it to be noticeable =)

Edit: I should say, the red dot is visible, but no beam is visible... can higher powered lasers show the beam without some interference such as smoke? Or is that just basically a given that you're just going to get a point of light and no beam? Some of the videos I've watched show a very noticeable beam.[/quote]
You an easily see the beam of a 5mw green in the dark with no smoke or fog. A >100mw green will shoot out a spectacular green beam in the dark that you can see from miles around.
 
Yes green is brighter to the human eye.The brightest available.
The beam will never be visible without something to bounce off like smoke/humidity/fog/any other atmospherical junk, so the thicker the junk the brighter the beam.Maybe blue or violet lasers will have visible beams at high powers in perfectly pure air as those photons have shorter wavelengths and get scattered by air molecules.
 
Razako said:
Btw if you want a nice beginners green laser for cheap I recommend this.
{website}
For $25 you can get a decent green.
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Thanks for the link, but a member has told me through YouTube (I think his name is styropyro) that I can get a 250mW pen from a user on this site for 80 bucks... isn't that a better deal?

Apparently I can't quote links, so I had to remove Razako's link.
 
I don't think he meant green....Maybe red.I want a 250mW green for 80 bucks too :D
 
laserwayne said:
my price range is $200 at the highest.
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Hahahaha, you're not going to get anything except scammed for $200 if you try to buy a blue laser.

Save up 3 times that, and you could buy a 5mW blue from Laserglow or Dragonlasers.
 
hey ricky, you need a few more posts before you can post links. there is a limit of 20 posts before you can post links in order to prevent spammers

good luck finding a laser

regards,
-avery
 
also if you get a high power laser dont forget to get safety goggles

peace,
-ave
 
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