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Old 07-29-2008, 07:22 PM #1
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Default Making a strong green laser.

Hi, I want to make a green laser strong enough to light matches, pop balloons, cut tape, etc. I was wondering if any of you could help me. I live in California. My parents don't let me buy anything off the internet though, so that's a big set-back for me. Any suggestions?


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Old 07-29-2008, 08:08 PM #2
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Default Re: Making a strong green laser.

Sorry, but you can't make a green laser without the proper equipment. You are basically stick with red, violet, and IR for building, if you want green you're going to have to buy it.
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Old 07-29-2008, 08:14 PM #3
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Default Re: Making a strong green laser.

Green lasers are generally far too complicated for anyone to build themselves.

They're what are known as "DPSS" lasers, or diode pumped solid state. These use a powerful infrared laser at 808nm, shine it through a Nd:YVO4 crystal to increase the wavelength to 1064nm, then pass it through a KTP frequency doubling crystal which converts it to 535nm green light... In order to work at all, these crystals must be aligned with micrometer precision.. the slightest fraction of a millionth of an inch out of alignment and it won't work.

Try this thread for some writeups on how to build yourself a *red* laser... this will be several orders of magnitude easier.
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Old 07-29-2008, 08:14 PM #4
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Default Re: Making a strong green laser.

Quote:
Originally Posted by Orranis
Hi, I want to make a green laser strong enough to light matches, pop balloons, cut tape, etc. I was wondering if any of you could help me. I live in California. My parents don't let me buy anything off the internet though, so that's a big set-back for me. Any suggestions?

Yes. Honor your parents' wishes.

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Old 07-29-2008, 08:54 PM #5
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Default Re: Making a strong green laser.

Alright, thanks for the help. And Dave, what wishes? They are only paranoid that someone will steal their credit card information, which is a completely justified reason, but they just take that too far.
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Old 07-29-2008, 09:05 PM #6
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Default Re: Making a strong green laser.

Oh, and one more thing. Do any stores sell Aixis laser modules? Or are they only on the internet?
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Old 07-29-2008, 09:06 PM #7
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Default Re: Making a strong green laser.

how about paypal
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Old 07-29-2008, 09:09 PM #8
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Default Re: Making a strong green laser.

Quote:
Originally Posted by pseudolobster
Green lasers are generally far too complicated for anyone to build themselves.

They're what are known as "DPSS" lasers, or diode pumped solid state. These use a powerful infrared laser at 808nm, shine it through a Nd:YVO4 crystal to increase the wavelength to 1064nm, then pass it through a KTP frequency doubling crystal which converts it to 532nm green light... In order to work at all, these crystals must be aligned with micrometer precision.. the slightest fraction of a millionth of an inch out of alignment and it won't work.

Try this thread for some writeups on how to build yourself a *red* laser... this will be several orders of magnitude easier.
*Corrected.


Get a burner and make a DYE laser.
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Old 07-29-2008, 09:14 PM #9
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Default Re: Making a strong green laser.

Quote:
Originally Posted by Orranis
Alright, thanks for the help. And Dave, what wishes? They are only paranoid that someone will steal their credit card information, which is a completely justified reason, but they just take that too far.

I didn't say anything about their reasons. You said that they wouldn't let you buy anything off the internet. Their "wish" is that you NOT buy things from the internet. "Why" they do not want you to do it is irrelevant. If you disagree, you can try to reason with them and/or show them how they can protect themselves. If those don't work, eventually you will move out and you can do whatever you want to (within the law). In the mean time my suggestion is that you honor their wishes. Trying to sneak a way around their wishes will only end YOU up in trouble.

PayPal is a good alternative. You/they can set up a "clean" account that is only used on the 'net. You just put in what you need and do NOT link it to any other accounts. If you are in the US, PayPal is rolling out a way to use "one use" credit cards with the funds from your PayPal account. None of your personal information is sent to the vendor. They are going to have to trust PayPal, but that is no more problematic than trusting their bank.

Peace,
dave
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Old 07-29-2008, 09:48 PM #10
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Default Re: Making a strong green laser.

If I ever met PayPal in person, I'd punch them in the face. No good beatnicks.

Anyway, a red or blu ray or infrared is the only laser you could build, and buying equipment off the internet is pretty much the only way to get the parts for it.
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Old 07-29-2008, 09:56 PM #11
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Default Re: Making a strong green laser.

Quote:
Originally Posted by daguin
[quote author=Orranis link=1217359363/0#4 date=1217364877]Alright, thanks for the help. And Dave, what wishes? They are only paranoid that someone will steal their credit card information, which is a completely justified reason, but they just take that too far.

I didn't say anything about their reasons. You said that they wouldn't let you buy anything off the internet. Their "wish" is that you NOT buy things from the internet. "Why" they do not want you to do it is irrelevant. If you disagree, you can try to reason with them and/or show them how they can protect themselves. If those don't work, eventually you will move out and you can do whatever you want to (within the law). In the mean time my suggestion is that you honor their wishes. Trying to sneak a way around their wishes will only end YOU up in trouble.

PayPal is a good alternative. You/they can set up a "clean" account that is only used on the 'net. You just put in what you need and do NOT link it to any other accounts. If you are in the US, PayPal is rolling out a way to use "one use" credit cards with the funds from your PayPal account. None of your personal information is sent to the vendor. They are going to have to trust PayPal, but that is no more problematic than trusting their bank.

Peace,
dave[/quote]
I know they don't want me to buy anything off the internet, which is why I was wdonering if I could make a laser without purchases on the internet. My parents still wouldn't trust PayPal, they think it will still get there information stolen.
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Old 07-29-2008, 09:57 PM #12
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Default Re: Making a strong green laser.

Quote:
Originally Posted by el-taco
If I ever met PayPal in person, I'd punch them in the face. No good beatnicks.

Anyway, a red or blu ray or infrared is the only laser you could build, and buying equipment off the internet is pretty much the only way to get the parts for it.
Guess I'll just play with my RC stuff then.
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Old 07-29-2008, 10:00 PM #13
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Default Re: Making a strong green laser.

you could mail a check to nova to buy from their.
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Old 07-29-2008, 10:24 PM #14
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Default Re: Making a strong green laser.

Quote:
Originally Posted by jamilm9
you could mail a check to nova to buy from there.
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Old 07-29-2008, 10:36 PM #15
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Default Re: Making a strong green laser.

Quote:
Originally Posted by jamilm9
you could mail a check to nova to buy from their.
I could ask, but they'll probably say no.
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Old 07-29-2008, 10:40 PM #16
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Default Re: Making a strong green laser.

whats your budget(if you can buy).
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