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Old 08-26-2010, 10:56 PM #1
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Default Playing around

I was 'testing' my red gas Spectra-Physics 60 and thought I'd fire my green laser in the semi-polished end.
Whats it now a yellow semi-gas laser?
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Old 08-27-2010, 01:48 AM #2
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Default Re: Playing around

So you're claiming a gas/semi conductor hybrid! (Cool, may I add!!!)

Good stuff! Nothing wrong with that! I haven't seen one of those at all! The setup looks kind of weird. Whar's the tube next to the HeNe one?

Nice work! Any more photos of the dot/beam? What are the outputs?

I can see a yellow, He/Ne/diode pionter build in the offing!

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Old 08-27-2010, 02:50 AM #3
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Default Re: Playing around

That was my first tube and the smaller tube attached is the flash tube with the mirrored ends.

It has a 10 ohm resistor and a Plasma Power supply. That pulls around 500mW when powered so my best guess is the tube output maybe in the 350-450 mW range.

I need to build a nice kit to hold it and protect it, but I've had in a shoebox for 25 years! However, that will change since I've been here!!

Here are a few more shots.
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Old 08-27-2010, 11:11 PM #4
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Default Re: Playing around

Welcome to multilayer dichroic optics..

Steve
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Old 08-31-2010, 06:44 PM #5
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Default Re: Playing around

Quote:
Originally Posted by onion View Post
output maybe in the 350-450 mW range.
thats a hene... its probably putting out *maybe* 5mW
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Old 08-31-2010, 07:59 PM #6
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Default Re: Playing around

yea, its like 30 years old.
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Old 08-31-2010, 08:01 PM #7
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Default Re: Playing around

ya they are cool though... henes are special

but ya a 350mW hene would be like a mile long lol
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"Lab" Lasers:
2x 650nm 1000mW CNI
2x 650nm 1000mW unknown?

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1x 532nm 1500mW LaserWave
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Old 08-31-2010, 08:32 PM #8
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Default Re: Playing around

In that case I gots a 350mW HeNe in my pants suckaz! I dunno if it'll lase, but it's sure damn loooooooooooooooooooooooooooooooong (and thick too!!) LOL!
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Old 08-31-2010, 08:35 PM #9
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Default Re: Playing around

Quote:
Originally Posted by ElektroFreak View Post
In that case I gots a 350mW HeNe in my pants suckaz! I dunno if it'll lase, but it's sure damn loooooooooooooooooooooooooooooooong (and thick too!!) LOL!
damn dude if what comes out of the end is red or green you should see a doctor!!!...
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Pointers:
1x 445nm 900mW in Jayrob stainless host, turned down to ~350mW (as low as the driver would let me)
"Lab" Lasers:
2x 650nm 1000mW CNI
2x 650nm 1000mW unknown?

1x 642nm 1200mW KVant
1x 642nm 550mW LaserWave
1x 593.5nm 50mW CNI
1x 532nm 1500mW LaserWave
1x 532nm 1500mW Viashow
1x 532nm 1800mW Lambda Pro
1x 532nm 2400mW Melles Griot
1x 532nm 15000mW LaserScope

1x 473nm 400mW LaserWave
1x 473nm 10mW B&W Tek

2x 445nm 1200mW O-Like


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Old 08-31-2010, 08:43 PM #10
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Default Re: Playing around

Sh*t.....................
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Old 09-10-2010, 10:38 PM #11
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Default Re: Playing around

Quote:
Originally Posted by flecom View Post
thats a hene... its probably putting out *maybe* 5mW
Probably more like 1-2mW in top condition, possibly less than 0.5mW. A modern 5mW HeNe tube will be around 18" long and the biggest I'm aware of were the SP 125's which at around 6 feet long could do over 120mW. Most (all?) of those old side arm HeNe tubes were soft sealed so it's rare to see one working at all by now. Occasionally you can give them a helium soak to resurrect it if the problem is only helium diffusing out through the seals.

Gas lasers in general are orders of magnitude less efficient than diode lasers. The only one that even comes close is CO2 at about 10% IIRC. Ion lasers are some of the worst, I have a small argon that draws ~1200W to put out less than 30mW, it makes a great space heater but nothing else I've seen matches the beautiful green and blue lines it produces. Beam quality is another area where gas lasers really shine, nice clean round beam with little divergence.
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