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Old 03-22-2010, 04:14 PM #17
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Default Re: Why gas lasers?

Ruby, Yag, Etc... are all referred to as "solid state lasers" I do believe.

Even a green KTP laser is called DPSS Diode Pumped Solid State laser.


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Old 03-22-2010, 04:20 PM #18
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Default Re: Why gas lasers?

Quote:
Originally Posted by BobH View Post
But a diode is also a solid, and it's referred to as a "semiconductor" laser.
And a solid state laser...
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Old 03-22-2010, 06:25 PM #19
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Default Re: Why gas lasers?

Quote:
Originally Posted by photonaholic View Post
Ruby, Yag, Etc... are all referred to as "solid state lasers" I do believe.

Even a green KTP laser is called DPSS Diode Pumped Solid State laser.
Yes, this is correct, BobH uses only a more detailed classification, for example a carbon dioxide is a molecule but also a gas
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Old 03-22-2010, 06:33 PM #20
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Default Re: Why gas lasers?

Some great pictures in here, really beautiful. I may have to get hold of a He-Ne soon, I just don't want to shock the hell out of my self if there's a bare tube.
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Old 03-23-2010, 12:50 AM #21
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Default Re: Why gas lasers?

So are Indium gallium nitride lasers (bluray) molecular, solid state, direct injection, diode, non-ionic, or saxophonic lasers?
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Old 03-23-2010, 01:04 AM #22
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Default Re: Why gas lasers?

Quote:
Originally Posted by Arayan View Post
Yes, this is correct, BobH uses only a more detailed classification, for example a carbon dioxide is a molecule but also a gas
so then, Argon is an atom, then an argon laser is an "Atomic Laser"

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Old 03-23-2010, 09:58 AM #23
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Default Re: Why gas lasers?

Maybe someone can relate to this analogy.....why do some guys prefer to own and drive a classic car?...perhaps a 1968 Ford Mustang? Is it the shape? the old school carbie perhaps? They are uncomfortable, thirsty and require heaps of maintenance and yet there's something about them that always makes heads turn.
That's what I reckon it is with a gas laser. I really like Diode, but I love Gas!
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Old 03-23-2010, 11:52 AM #24
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Default Re: Why gas lasers?

Just got a notice from the post office that a nice package from the laser guru himself, Sam G. has arrived this morning. There's some lovely HeNe goodness in there. Can't wait 'till tomorrow to pick it up!

Gas lasers are indeed big and bulky, use high voltages and can hardly be as portable as a small diode-based pointer... but it's the magic of this technology that makes it so attractive. The glow of a tube and the lasing output is the stuff of science fiction novels.

why gas lasers? The same question can be applied to "Why an expensive blue DPSS laser pointer instead of a 1 mw red pointer from the dollar store?" Simply because it's so damn cool!

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Old 03-23-2010, 01:03 PM #25
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Default Re: Why gas lasers?

Quote:
Originally Posted by photonaholic View Post
so then, Argon is an atom, then an argon laser is an "Atomic Laser"

LOL You should include this definition under patent
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Old 03-23-2010, 01:37 PM #26
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Talking Re: Why gas lasers?

LOL ..... well, doing devil's advocate ..... cause ANY substance, regardless they are gas, solid, liquid or dyes, are made by atoms, then any lasers that uses any of these substances for produce the coherent light can be defined "atomic laser" .....

..... ok, ok, except X-ray and gamma-ray lasers
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Old 03-23-2010, 03:08 PM #27
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Default Re: Why gas lasers?

Why wouldent you want a gas laser?! long glass tube full of gas with 1500V going through it turning the gas into plasma, then bouncing off some mirrors and then FINALLY out comes "PURDY" 632.8nm goodness. well mine are 632.8 anyway there are lots more colors!




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Old 03-23-2010, 09:40 PM #28
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Default Re: Why gas lasers?

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So are Indium gallium nitride lasers (bluray) molecular, solid state, direct injection, diode, non-ionic, or saxophonic lasers?

I'm going with saxophonic..
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Old 03-25-2010, 02:47 PM #29
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Default Re: Why gas lasers?

Can gas lasers be damaged as easily as diodes?

Last edited by Devil_Master; 03-25-2010 at 02:56 PM.
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Old 03-25-2010, 03:04 PM #30
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Default Re: Why gas lasers?

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Can gas lasers be damaged as easily as diodes?
Sorry. That question is much too vague.

Damaged by what? ESD? Impact? Temperature? Reflection? Age? Current? ????

Peace,
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Old 03-25-2010, 04:31 PM #31
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Default Re: Why gas lasers?

Quote:
Originally Posted by daguin View Post
Sorry. That question is much too vague.

Damaged by what? ESD? Impact? Temperature? Reflection? Age? Current? ????

Peace,
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Spikes of current, current too high for that particular laser, temperature too high.

Also, I read a post about an argon laser where it was said that if it hasn't been activated for a long time, it was probably unable to be activated again. Why does that happen?
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Old 03-25-2010, 04:40 PM #32
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Default Re: Why gas lasers?

The damage from over-current and over-temp is generally cumulative. That is it decreases lifetime, but is unlikely to cause immediate failure.

When ion lasers sit, the gas seeps out from the tube lining, raising the pressure and raising the voltage drop of the tube. If the voltage/pressure is too high, the PSU has difficulty maintaining a high enough current. With regular operation, gas is buried in the tube lining, lowering the pressure and the voltage drop.
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