Old 09-19-2016, 08:46 AM #1
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Exclamation Advice for optics and powers

Hi Folks ,

I'm building a laser with a total power of 96W ! But now I am stuck on the positioning in the series, and on the proper focus with the prism optical ,I have to say that I'm talking about the 3 laser modules powered 12V-2A and fan dissipation from 5V ,one from the 1.6 W a a 2.5 W one is from 5.5 W ,then how should I place them ? starting from the smallest ? or from the biggest ?


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Old 09-19-2016, 03:04 PM #2
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Default Re: Advice for optics and powers

Quote:
Originally Posted by DaRk LaSeR View Post
Hi Folks ,

I'm building a laser with a total power of 96W ! But now I am stuck on the positioning in the series, and on the proper focus with the prism optical ,I have to say that I'm talking about the 3 laser modules powered 12V-2A and fan dissipation from 5V ,one from the 1.6 W a a 2.5 W one is from 5.5 W ,then how should I place them ? starting from the smallest ? or from the biggest ?

Not sure I'm quite understanding what you mean? Could you explain in a little more detail - perhaps provide some drawings/diagrams of what you're thinking/have already.
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Old 09-19-2016, 03:14 PM #3
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Default Re: Advice for optics and powers

Yep , in practice, I want to know how to combine the 3 laser modules , that is, in this way : 5.5 w+2.5 w+1.6 w ? all here ! and then put a single prism optical long-15cm in order to join the 3 laser beams and have a unique laser beam powerful !
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Old 09-19-2016, 03:27 PM #4
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Default Re: Advice for optics and powers

How do you intend to get 96W from 5.5, 2.5, and 1.6w? Does not seem reasonable.
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Old 09-19-2016, 03:35 PM #5
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Default Re: Advice for optics and powers

Quote:
Originally Posted by Sta View Post
How do you intend to get 96W from 5.5, 2.5, and 1.6w? Does not seem reasonable.
OP meant 9.6W, not 96W, just a typo.

Quote:
Originally Posted by DaRk LaSeR View Post
Yep , in practice, I want to know how to combine the 3 laser modules , that is, in this way : 5.5 w+2.5 w+1.6 w ? all here ! and then put a single prism optical long-15cm in order to join the 3 laser beams and have a unique laser beam powerful !
Again, can you give us a diagram of what you're trying to achieve? Are you wanting to combine the beams using a prism like this?

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Last edited by diachi; 09-19-2016 at 03:37 PM.
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Old 09-19-2016, 03:40 PM #6
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Default Re: Advice for optics and powers

Exactly Diachi , yep 9.6W not 96W i'm sorry !
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Old 09-19-2016, 04:12 PM #7
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Default Re: Advice for optics and powers

Quote:
Originally Posted by DaRk LaSeR View Post
Yep , in practice, I want to know how to combine the 3 laser modules , that is, in this way : 5.5 w+2.5 w+1.6 w ? all here ! and then put a single prism optical long-15cm in order to join the 3 laser beams and have a unique laser beam powerful !
Quote:
Originally Posted by DaRk LaSeR View Post
Exactly Diachi , yep 9.6W not 96W i'm sorry !

So you do want to use a prism like in the image I posted to combine the beams?
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Old 09-19-2016, 04:17 PM #8
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Default Re: Advice for optics and powers

Yep , exactly ...! how can I do ?
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Old 09-19-2016, 04:20 PM #9
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Default Re: Advice for optics and powers

Quote:
Originally Posted by DaRk LaSeR View Post
Yep , exactly ...! how can I do ?

What diodes are you using?
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Old 09-19-2016, 04:24 PM #10
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Default Re: Advice for optics and powers

Nichia 9mm for the 5.5 W and 2.5 W 5.6 mm to 1.6 W
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Old 09-19-2016, 04:25 PM #11
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Default Re: Advice for optics and powers

Quote:
Originally Posted by DaRk LaSeR View Post
Nichia 9mm for the 5.5 W and 2.5 W 5.6 mm to 1.6 W

What wavelengths are they? They need to be different wavelengths if you want to combine them with a prism.

See this video: https://www.youtube.com/watch?v=UE-73EWUapw
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Old 09-19-2016, 04:29 PM #12
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Default Re: Advice for optics and powers

are all 3 laser blue with a wavelength of 445nm ,the only difference being in power !
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Old 09-19-2016, 04:32 PM #13
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Default Re: Advice for optics and powers

Quote:
Originally Posted by DaRk LaSeR View Post
are all 3 laser blue with a wavelength of 445nm ,the only difference being in power !
OK, so to combine them with a prism you need them to be different wavelengths.

Diode lasers often vary in wavelength straight from the factory, so they may already be slightly different. If not - you'd need to "temperature tune" each diode individually - as is done in the video I linked in my last post.
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Old 09-19-2016, 04:36 PM #14
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Default Re: Advice for optics and powers

Yes , I saw the video ! ehm...unfortunately I have only these 3 laser modules I have ! it will mean that I will try to combine the 3 beams in a single beam, and what comes out,it will come out !!!! patience .
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Old 09-19-2016, 04:40 PM #15
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Default Re: Advice for optics and powers

Your best bet is knifedging the two lower power modules and then combining through pbs. But the optical output will not be of great quality.
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Old 09-19-2016, 05:05 PM #16
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Default Re: Advice for optics and powers

DaRk LaSeR, the more information you give us about what you want to build and how you plan to etc. the easier it will be for us to give good suggestions.

Do you simply want a powerful laser with out worrying about beam quality?
Are you going for power just for burning or do you really want high visibility?
What is you budget?
Etc....
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537nm / 542nm / 545nm / 550nm multi-line DPSS +/- 1nm
532nm: 500mw CNI PGL-III-C
515nm: 36mW laserBtB
514.5nm/501.7nm/496.5nm /488.0nm/476.5nm/457.9nm 2214-40MLA Argon Ion
462nm: 2W M462 Kryton Groove
450nm: 94mW laserBtB
445nm: 2.5W NDB7875 Kryton Groove - 40mW Pen laser using NDB7242E diode
405nm: 100mW PHR-805T

Building: 337.1nm: TEA laser

"Fiat Lux" - preferably laser light.

Last edited by Mattronium; 09-19-2016 at 05:06 PM.
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