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5000mw(5 watt) green laser emitting dim red light

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welp, then it's a DPSS... What's the diffrence between Diode and DPSS if i may ask?
 

Crazlaser

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Lol, I can't believe we've gotten this far and you don't know. A diode uses a chip like an led flashlight to create one wavelength of coherent light. DPSS also know as diode pumped solid state use an infrared diode which produces invisible light. I believe it starts with 808nm and a neodymium doped yttrium aluminum garnet Nd: YAG or a neodymium doped yttrium orthovanadate Nd:YVO4 crystal converts it to 1064nm while another crystal doubles the frequency of the wave to 532nm.
It's a tricky process that results in temperature and physical shock sensitivity.
 
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diachi

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alright, ive ripped out the entire laser diode from my dead cheapo laser, and it seems there is only a small diode(like any other laser) and a small circuit board(no potmeter, just an LM358 chip and some other stuff. Again, the laser that was in question here. Are you guys sure about ther fact that it was a DPSS laser? And by the way, that laser from gearbest needs 35 days to ship... There goes my hype XD I actually want to spend all money in the shipment so it may arrive in 3-5 days...

Yes, we're sure it's DPSS. There's more than just a diode there.

You can get the same lasers on eBay and a few other places for similar prices, those places may ship faster. They may not. They come from China. That's how it is with cheap Chinese goods and free shipping.

Lol, I can't believe we've gotten this far and you don't know. A diode uses a chip like an led flashlight to create one wavelength of coherent light. DPSS also know as diode pumped solid state use an infrared diode which produces invisivle light. I believe it starts with 808nm and a crystal converts it to 1064nm while another crystal doubles the wavelength to 532nm.

You are correct, mostly. The KTP (second crystal) halves the wavelength, doubling the frequency. ;) Doubling the wavelength would get you 2128nm.

Cheap Chinese pointers look much like this inside (Actually, even simpler):



The diagram labeled "Second Generation" in this image is more accurate for a cheap Chinese laser these days, although they usually leave out the microlens too in my experience, and the IR filter. The 301s have an expanding lens after the crystal and before the collimating lens.

 
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Crazlaser

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You are correct, mostly. The KTP (second crystal) halves the wavelength, doubling the frequency. ;) Doubling the wavelength would get you 2128nm.
Ahh, corrected. I forgot that. Been a while since chemistry.
 
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wow, didnt expect that much. anyway, my problems solved itself: it died. so, i want to thank you all for the support and i know im a dick buying shit stuff and asking help here. Again thanks for all the help.
 

diachi

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Ahh, corrected. I forgot that. Been a while since chemistry.
Physics*... :whistle:

wow, didnt expect that much. anyway, my problems solved itself: it died. so, i want to thank you all for the support and i know im a dick buying shit stuff and asking help here. Again thanks for all the help.
No problem!
 

Crazlaser

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Did... Did you actually take chemistry? :crackup:
Yes. AP chemistry in highschool.

Diachi, not physics. It's taught in physics but also in chemistry to understand atomic structure.

Proof it was in chemistry and not physics. We actually went into quite a lot of detail and I struggled to grasp the concepts.



 
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H2Oxide

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Yes. AP chemistry in highschool.

Diachi, not physics. It's taught in physics but also in chemistry to understand atomic structure.

Proof it was in chemistry and not physics. Sorry the pictures are upside down.
I guess that makes more sense.

Typically not associated with chemistry though, considering how NLO is a branch of optics, which itself is a branch of physics.
 

CurtisOliver

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To be totally honest, that chemistry textbook looks like a physics textbook. :D Technically all sciences eventually crossover each other anyway.
 

Crazlaser

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Certainly is chemistry. Stoichiometry and electron orbits are not covered in physics if I remember correctly.
 

diachi

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To be totally honest, that chemistry textbook looks like a physics textbook. :D Technically all sciences eventually crossover each other anyway.
That's right! :beer:

Certainly is chemistry. Stoichiometry and electron orbits are not covered in physics if I remember correctly.
An understanding of waves and such may be required for Chemistry, but it's usually a physics subject. I certainly don't remember covering it, and I was the top of my year and the year above me at Chemistry (Only A+ that year too :D), although I think they just assumed we knew it from the physics classes we had to take at the start of highschool.

Electron orbits come up in physics too actually, electron energy levels are important in many areas - and specifically laser physics, but in other areas too.

Stoichiometry is definitely a purely chemistry sort of thing though.

Science is a wonderful thing that way. As Curtis said, all sciences eventually cross over somewhere.
 

dden4012

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wow, didnt expect that much. anyway, my problems solved itself: it died. so, i want to thank you all for the support and i know im a dick buying shit stuff and asking help here. Again thanks for all the help.
Now you have a new problem, what build to put in that host....:na: :beer:
 
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If it's the one in his avatar it's a laser 303 and I've never heard of a laser 303 emitting close to 500mw.
Lazerer used to sell a 1W 445nm in a 303 host. I suspect it was probably close to spec back in the days when it was still a good company. I have no idea if they still sell them now. It's a shame I didn't get one.

Be careful with DPSS because the usual safety glasses won't stop the IR component. They only stop the shorter wavelengths. If you use a digital camera to view the IR dot you can see it generally passes right through and is usually well-collimated. Proper safety glasses have to be rated for the IR component as well or else you might be at risk when you think you're safe.
 
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Alaskan

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Craz Laser, are you CrazyJay back here to play us? Maybe not, but the guy once called me on my cell phone and forgot to turn off his paid for IP fake out service which showed his call coming from Skype in Germany.

Like your avatar showing different colored keys, is that a hint? I am convinced the guy is coming back in here answering his own questions, LOL.... so now I suspect completely innocent newbies to the forum for being him! Imagine that, because I know you aren't doing that, but the choice of name you have here did make me think so at first.
 




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