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Custom 2W laser idea

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XRayLaser

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Hey guys. I'm thinking of building a laser that uses three laser diodes: 650nm, 532nm, and 405nm diodes. My goal is to get this laser to have an output power of at least 2W. I am curious to hear what you all think of this idea. Also, what would this look like, considering that i am replacing the typical blue color to make a white laser with a violet color? What color would this output? Thanks.
 





Why would you use a 532nm DPSS laser in this mix? You would be better off with a 520nm direct diode. Also, the 405nm is not very visible compared to a 445nm or 450nm. Getting them aligned will be a major hurdle if you are planning on putting it in a hand held pointer type host. If not, then you could probably buy one for less than it will cost you to build one from scratch.
 
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I would suggest just waiting for the new Sanwu RGB laser which will put 3 diodes to a much greater use other than just white. Sanwu RGB doesn't meet your goal of 2 Watts though. Accurate aligning of the beams will be a challenge in tight space and as Paul said, you will be better off using a 520. Remember If you do decide to build this then you should take notice that 1 pair of goggles won't cover all wavelengths. :)
 
I think.....

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Jerry
 
Thanks for the suggestions. What if I used a 505nm diode instead of 520nm? Would the combined beams give a cool color?
 
I think you need to do a little more research on what you're trying to do -- based on the post you made in the 4-year old thread a couple minutes ago using a colored filter.

I'll go a little off topic to explain it... think about your computer monitor. There are red, green, and blue light sources in each pixel. By varying the output on each of those, you can simulate a different color, which usually vary from 0 - 255 today.

so 0 red, 255 green, and 255 blue on our monitors is this color, 255 red, 100 green, 0 blue is This color and the list goes on...

But these aren't actually making yellow light, or cyan light, or anything like that. It's just our eyes filling in the blanks and trying to guess the color

So you can approximate the color you are looking for via a color gamut chart, where the outside horseshoe edge is your wavelength of light, and anything inside is a color our eyes would see based on the mix of those colors

1200px-CIE1931xy_blank.svg.png


So looking at this, you can see why we're saying 635nm (red), 520nm (green), and 450nm (blue) as they give the most coverage of the color gamut (draw a triangle between the three spots they'd be in the chart, anything inside the triangle is a color you can reproduce)



and if you replace the 520 with 505, you'll get a lot less yellow coverage


__

Also, to answer the question in the yellow laser thread, no you cannot put a yellow filter and expect yellow out. because it's not yellow light you're seeing, it's red light and green light that you're seeing at the same time, and your brain just mixes them together at its own convenience.
 
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XRayLaser said:
Thanks for the suggestions. What if I used a 505nm diode instead of 520nm? Would the combined beams give a cool color?
Click to expand...

Yup, A daydream color :rolleyes:

Please, use the search function!

No one is going to spoon feed your questions which has discussed many times here in forum.
 
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Hard to tell, I asked many such questions when I first came here, but with the user name and previous threads on xray lasers, I'm tending towards that idea.
 
XRayLaser said:
Thanks for the suggestions. What if I used a 505nm diode instead of 520nm? Would the combined beams give a cool color?
Click to expand...
Cool color ? :crackup:
How old are you --10 or 12.
Stop wasting everyone's time.
Use the LPF Custom search function at the bottom of the page to research the topic instead of posting make believe/imaginary nonsense questions about imaginary lasers that don't exist except in your imagination and you have no ability to make.

You obviously have no idea/no comprehension of what you are talking about much less any concept or knowledge of how to make any laser you are asking about or how it would function.

If you want to assemble a laser, try making a single wavelength laser as a start

As has been explained already to you Red, Green, and Blue laser beams combined do not create any other wavelengths----just the illusion of white and other wavelength colors.
In the real world the output remains just red, green and blue wavelength beams.
Multiple wavelengths of laser light do not "mix" and produce any new/other wavelengths.
"Color" is not a physical property; it is merely the brain’s interpretation of different wavelengths of light.

As has been asked before --- please make a Welcome post in the Welcome sub-forum.

ArcticDude said:
Yup, A daydream color :rolleyes:

Please, use the search function!

No one is going to spoon feed your questions which has discussed many times here in forum.
Click to expand...

Exactly.

Alaskan said:
My guess, HMT?
Click to expand...

ArcticDude said:
Seem so
Click to expand...

Yes---seems to be the case
 
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Encap said:
Cool color ? :crackup:
How old are you --10 or 12.
Stop wasting everyone's time.
Use the LPF Custom search function at the bottom of the page to research the topic instead of posting make believe/imaginary nonsense questions about imaginary lasers that don't exist except in your imagination and you have no ability to make.

You obviously have no idea/no comprehension of what you are talking about much less any concept or knowledge of how to make any laser you are asking about or how it would function.

If you want to assemble a laser, try making a single wavelength laser as a start

As has been explained already to you Red, Green, and Blue laser beams combined do not create any other wavelengths----just the illusion of white and other wavelength colors.
In the real world the output remains just red, green and blue wavelength beams.
Multiple wavelengths of laser light do not "mix" and produce any new/other wavelengths.
"Color" is not a physical property; it is merely the brain’s interpretation of different wavelengths of light.

As has been asked before --- please make a Welcome post in the Welcome sub-forum.



Exactly.





Yes---seems to be the case
Click to expand...

I know that they don’t give a diffenent wavelength. I’m not that stupid.
 
You will certainly have an unusual color mix, but the divergence and beam diameter of 405 nm single mode laser diode won't be the same if mixing in with red and green multimode diodes to produce the power you want. Since 405 nm diodes are single mode diodes, to better match beam characteristics you will want to use single mode red and green diodes with it. Due to 405 nm violet being only 1 percent as bright to the human eye compared to green, you would want to use a 16X 405 nm laser diode set to about 700 milliwatts output, but even at that power and the other diodes low power single modes, I have doubts it would work out well, the 405 nm beam is very faint at that wavelength and the beams won't stay together very well with such a mix, better to use a 450 nm blue laser diode of the same type, all either single mode, or all multimode.
 
Also, I know that the film outputs wavelengths in the green range and red range. I know we would perceive it as yellow when it’s really a combination of two colors. I’m not as uneducated as you guys, make clear, think I am. It would just appear yellow.
 
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