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Old 10-24-2010, 04:30 AM #1
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Default Challenge: cool experiments with 445nm

As I am yet to complete my RGB projector build, my 445nm labby sits on my bench waiting to produce glorious coherent beams of joy.

Burning things is boring. As are simple motor/mirror spyros.

Here is the challenge. Post your ideas and evidences of other cool experiments using 445nm LD's that do NOT involve burning things. Be creative, have fun.

The gauntlet is dropped.


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Old 10-24-2010, 07:39 AM #2
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Default Re: Challenge: cool experiments with 445nm

Put 1 445 on a binocular and see how crap the dot looks like @ 1 mile away
Use and it will give this result





I'm thinking really hard , ok this video with the glass was just to show an idea but it's to dangerous cause the output is way to much to use in a living room or where ever ( maybe with high RPM will do fine lol )
Hmmm what more can we do with lasers...

Last edited by weeba2kv; 10-27-2010 at 07:51 AM.
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Old 10-28-2010, 01:05 AM #3
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Default Re: Challenge: cool experiments with 445nm

I'm waiting to see someone try pumping a CW dye laser with one or more of these things. It's been done with argon lasers in the past so I suspect that it's possible.
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Old 10-28-2010, 01:08 AM #4
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Default Re: Challenge: cool experiments with 445nm

I have a cool experiment in mind, I just need to collect enough mirrors, then I'll post the results.

Hint: your typical smoke and mirrors trick.
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Old 10-28-2010, 02:15 AM #5
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Default Re: Challenge: cool experiments with 445nm

buy an optics set from optotronics
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Old 10-28-2010, 03:55 AM #6
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Default Re: Challenge: cool experiments with 445nm

sounds like someones gonna make a laser grid type obstacle course
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Old 10-28-2010, 07:35 AM #7
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Default Re: Challenge: cool experiments with 445nm

Why buy optic mirrors , you can get the out cheap scanners and overheadprojectors
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Old 11-05-2010, 11:10 PM #8
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Default Re: Challenge: cool experiments with 445nm

Lumia wheel show is my fave use for lasers.

I agree about the burning thing... people put such emphasis on the ability to burn things, you'd think they are getting paid to walk around with a laser and burn as many items as possible.

In reality, for a week you're going to make your friends go "wow" as they watch you smoke a few items then the laser sits doing nothing for a few months until it's time for B/S/T!
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Old 11-06-2010, 02:59 PM #9
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Default Re: Challenge: cool experiments with 445nm

Quote:
Originally Posted by james1095 View Post
I'm waiting to see someone try pumping a CW dye laser with one or more of these things. It's been done with argon lasers in the past so I suspect that it's possible.
Nope, multimode 445 cannot reach the required focused spot size or power density to pump a visible dye.

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Old 11-06-2010, 03:56 PM #10
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Default Re: Challenge: cool experiments with 445nm

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Originally Posted by Gryphon View Post
sounds like someones gonna make a laser grid type obstacle course
Hehe.. with over a watt of beam power, people will at least me motivated to keep out of the beam. Be careful not to set anyones pants on fire
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Old 11-06-2010, 04:58 PM #11
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Default Re: Challenge: cool experiments with 445nm

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Originally Posted by LSRFAQ View Post
Nope, multimode 445 cannot reach the required focused spot size or power density to pump a visible dye.

Steve
How about several of them focused on a single spot? I've never played with dye lasers so I really don't know much about them.
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Old 11-06-2010, 05:24 PM #12
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Default Re: Challenge: cool experiments with 445nm

Anyone attempt a hologram with the 445 diodes? Surely ~1W would be enough light to get it done.
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Old 11-06-2010, 06:23 PM #13
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Default Re: Challenge: cool experiments with 445nm

Don't you need a nice TEM00 beam for that? I think a DPSS would be a much better choice. Larger HeNe heads have dropped sharply in price as well, they are the classic holography laser, I've never tried myself but I've seen some really impressive results. Guess I should give it a go sometime now that laser equipment is so affordable.
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