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Why gas lasers?

photonaholic

photonaholic

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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.
 





Arayan

Arayan

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photonaholic said:
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.
Click to expand...
Yes, this is correct, BobH uses only a more detailed classification, for example a carbon dioxide is a molecule but also a gas :)
 
Asherz

Asherz

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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.
 
Cyparagon

Cyparagon

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

photonaholic

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Arayan said:
Yes, this is correct, BobH uses only a more detailed classification, for example a carbon dioxide is a molecule but also a gas :)
Click to expand...

so then, Argon is an atom, then an argon laser is an "Atomic Laser" :crackup:

elements.gif
 
T

timelablasers

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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!
 
roddenberry

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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! :D

Robert
 
HIMNL9

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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" ..... :p :D

..... ok, ok, except X-ray and gamma-ray lasers :p :crackup:
 
xXAxHillbillyXx

xXAxHillbillyXx

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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!
100_0367.jpg

100_0366.jpg

100_0356.jpg

100_0353.jpg

:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D
 
Devil_Master

Devil_Master

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daguin said:
Sorry. That question is much too vague.

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

Peace,
dave
Click to expand...
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?
 
Cyparagon

Cyparagon

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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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