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Old 03-13-2012, 08:26 AM #17
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Default Re: Question about Yellow lasers

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Originally Posted by HildaS View Post
What are these lasers for? I understand that they have distinctions in colors but what is the main purpose of lasers?


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Old 03-13-2012, 11:07 AM #18
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Default Re: Question about Yellow lasers

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Originally Posted by HildaS View Post
What are these lasers for? I understand that they have distinctions in colors but what is the main purpose of lasers?
The main purpose of lasers is that they are for viewing with our eyeballs.

The other purposes (of low power visible lasers) include pointing out distant objects (with the focus being the object illuminated, not the laser itself), giving presentations/speeches, and making/viewing holograms. The first two are rarely ever done by laser lovers though.

I love the intellectual side of lasers as well; it's not just "ooooh pretty.... ", but also being able appreciate the science behind it. To own, understand, and assemble the most spectrally pure light sources available that also happen to be the only TRULY man-made light (lasers and single wavelegth emission do not exist in nature) adds another layer to it. When I stare at my 593.5nm SFG DPSS laser I'm thinking about the physics behind every step in the complex scheme that produces the light... from the atomic scale all the way up to the chemistry involved in creating the dies, crystals, and coatings which allow lasing, and even to thinking about which photoreceptors in my eyes are being stimulated and how that translates to a particular color. With changes in wavelength one really starts to think about how complex our perception of color is and you can really marvel at our eyes and brains. When I shine a high power laser at a target I think about how I'm converting chemical energy to electrical energy to electromagnetic energy to electrical and vibrational energy and then to thermal energy. I think about how lossy the entire system is and yet we have a coherent beam of light with powers greater than one watt at our disposal. With shorter wavelengths you also have fluorescence to play around with and I find it fascinating to take a spectrometer and observe the fluorescence spectrum of common objects. Even surfaces that don't appear to fluoresce actually do a small amount. It goes on and on.

There's a lot to lasers, a lot that is often overlooked and dismissed.
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Old 03-21-2012, 06:23 PM #19
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Default Re: Question about Yellow lasers

This topic made me shine my yellow once again.
Good read also, and i can relate to above poster.

Cheers, sm.
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Old 03-21-2012, 10:21 PM #20
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Default Re: Question about Yellow lasers

Sounds like you don't use your yellow too much.
Why let that color sit around? Let me take it off your hands
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Old 03-22-2012, 10:36 AM #21
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Default Re: Question about Yellow lasers

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Originally Posted by ZRaffleticket View Post
Sounds like you don't use your yellow too much.
Why let that color sit around? Let me take it off your hands
no no it's not like that.
i just had a operation on my hand.

cheers sm.
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Old 03-22-2012, 10:46 AM #22
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Default Re: Question about Yellow lasers

Because you burnt a hole through it using lasers?
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Old 03-22-2012, 11:04 AM #23
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Default Re: Question about Yellow lasers

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Originally Posted by LaZeRz View Post
Because you burnt a hole through it using lasers?
I wish the damage was pinpointed but it's not.
leaving in 10 min to busstop/ hospital.
Cheers sm.
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Ultrafire C3 host Osram 450nm 180mW single mode
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3XWLasers S3 473nm portable 112mW LE 1×S2
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SKYlasers PL520 520nm 80mW
Laserglow Hercules-650 532nm 850mW 777mW avg
Optotronics 450 RPL-G 532nm >570mW peak
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Old 03-22-2012, 11:09 AM #24
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Default Re: Question about Yellow lasers

Haha, hope you get well soon
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Old 03-22-2012, 01:52 PM #25
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Default Re: Question about Yellow lasers

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Originally Posted by HildaS View Post
What are these lasers for? I understand that they have distinctions in colors but what is the main purpose of lasers?
If you have to ask this then no answer is going to be good enough
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