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Old 06-03-2009, 02:34 PM #1
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Default Can it work...?

Hi I'm Davide ... I'm italian and I don't write english very well XD

...

So.
To start a laser you have to excitate atoms with High Voltage ... correct?
so can I use an HV inductor and apply a low voltage (for example 20V)
to the elettrods?

like this



thanks ...
Hello Davide XD


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Old 06-03-2009, 02:39 PM #2
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It depends on the laser, and I'm not sure what type of laser your picture is showing. Typically with a configuration like that shown in your picture attachment, the HV is used to power a flashlamp which converts the HV to light. This light then enters the laser rod and causes photons to be spontaneously emitted in the rod, which then leads to lasing. This is a highly shortened explanation. More info can be easily found by checking the links in my signature below.
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Old 06-03-2009, 03:09 PM #3
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it isn't important the tipe of the laser ... i'm interessed only about the method to start the laser ...
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Old 06-03-2009, 04:47 PM #4
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No, it's VERY important the type of laser. The method of starting (driving) is different depending on the laser. You'd know that already if you'd done even the slightest search here or any research of your own. I know there's a language barrier here, so I may be misunderstanding you, but I doubt it.

Do yourself a favor before you go playing with HV and do some research first. You'll find your odds of survival will increase exponentially with the amount of research you do on your own. As far as lasers, maybe search a little here on the forum. And like I said before read the links in my signature. Once you've done all that, then you'll be ready to think about connecting power to a laser.
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Old 06-03-2009, 04:55 PM #5
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That's not an inductor, that's a flash tube, and you need the high voltage in order to provide enough energy to the lasing medium to cause lasing.

Like many such diagrams, it seems really simple to make. However, it's like having diagram of how to make an atomic bomb: you need to have the materials, correct construction, and other conditions to make it work.

A really good place to start is Sam's Laser FAQ, which can help you make your own, or at least understand the principles behind it.

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Old 06-03-2009, 05:03 PM #6
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Hopefully, now that two people have said exactly the same thing and included exactly the same link, he'll do a little research.
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Old 06-03-2009, 08:40 PM #7
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tanks!!! I'll read links. I've just read about sam's lasers. Mine was only an idea...
I think that I'll read more about different tipes of lasers and their construction
and operating supply.

Hi!!!!
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Old 06-03-2009, 08:56 PM #8
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^There ya go! Happy reading. If you're anything like me, you'll end up hooked!
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Old 06-04-2009, 01:46 PM #9
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thanks!!!
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Old 06-05-2009, 08:22 AM #10
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oh ... I've extracted my first diode laser from a dvd burner and I made the power supply...
and this is the results ...
I decided to begin with this!!! XD




Bey!!
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Old 06-05-2009, 02:32 PM #11
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not bad as a start, beware becasue using a diode without host is most liekly killing it
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Old 06-05-2009, 03:06 PM #12
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Nicely done, delpy93. Pay attention to what Hallucinogenic said above, but the fact that you were able to build a driver and power up the diode is a great first accomplishment!
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Old 06-05-2009, 09:42 PM #13
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He's already leaps ahead of Kipkay.
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Old 06-06-2009, 02:31 PM #14
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... XD tanks ... but i don't know what means "host" and "Kipkay" ...

I love electronic..!!! XD
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Old 06-06-2009, 03:59 PM #15
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A host is something to put the laser in - usually a flashlight where the inside is removed to make space. A host will make it possible to carry the powersupply (a battery) together with the laser, protect the parts, let you switch it on and off with a button, attach a focusing lens and provide heatsink. Heatsinking is when you let one material take the heat away from another and you need it because the diode and driver produce heat which will make them break unless it is removed. Usually this is done by a host made of aluminium and a seperate bit of aluminium or copper inside (this part inside is what people call the heatsink).
Kipkay is a person on youtube who makes all sorts of projects, but the laser he made was done without a driver so it would stop working very fast. You are already better than him, and he is famous for electronics (;
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Old 06-06-2009, 04:33 PM #16
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oh ..!! thank you... i'm working to make the host
with the lens for the collimation...

thanks to everybody ... hi!!!
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