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Disassembly of a 589nm laser PGL-III-A (PIC HEAVY)






ultimatekaiser

ultimatekaiser

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Re: Disassembly of a 589nm laser PGL-III-A

You are correct. And because it as far as I've been told is required for the process. A regular KTP doesn't work because it's efficiency is too low from the irregular structure. Periodically poled one can have up to 20x the efficiency.
 
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Re: Disassembly of a 589nm laser PGL-III-A

ultimatekaiser said:
Lol, didn't you read it? It was already dead and misaligned, that's why I took it apart. I know how to do DPSS. It's not too big of a deal, but there's no easy way to put this back together as it was. I Might rebuild the cavity externally sometime.
Click to expand...

LOL I missed that.
 
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lazeristasUVISIR

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Re: Disassembly of a 589nm laser PGL-III-A

ultimatekaiser said:
You are correct. And because it as far as I've been told is required for the process. A regular KTP doesn't work because it's efficiency is too low from the irregular structure. Periodically poled one can have up to 20x the efficiency.
Click to expand...

LOL I read your initial message and went to google about possibilities of KTP.
Just for the record: KTP can be used with Nd:YAG like these people did
Laser-diode Array Pumped Nd?YAG/KTP Continuous Wave 589 nm Laser with Intracavity Sum-frequency Mixing--?Acta Photonica Sinica?2005?09?

That ppKTP is more efficient I knew. It should be more expensive to make it, and I wondered if ppKTP started to be used in pens too.

Your built may create a new star :shhh:
 
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lazeristasUVISIR

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Re: Disassembly of a 589nm laser PGL-III-A

ultimatekaiser said:
As mentioned earlier. Most of it is in the reflective coatings. It may be a normal KTP... But quality and numbers tell me it's likely been p. Poled. Which would help explain the cost. I suppose the only real way to know would be to ask CNI what they use.
Click to expand...

Check if it has a periodical pattern on its surfaces.
 
ultimatekaiser

ultimatekaiser

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Interesting note, was looking at these crystals and I just realized something...I don't think this is a YAG. Its not purple....its green. thoughts?
 
NightExplorer96

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I still have to say this.

It's amazing that a small crystal has the power to change light. I mean, when you come to think of it that's pretty amazing :p

It will always amaze me at least, don't know about you all :)
 
crazyspaz

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Can you see any indication of it being 2 crystals?

Also....Green? Wha...Huh? Wouldn't that mean its Nd:YVO4? I thought 589 was Nd:YAG :wtf:
 
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ultimatekaiser

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crazyspaz said:
Can you see any indication of it being 2 crystals?

Also....Green? Wha...Huh? Wouldn't that mean its Nd:YVO4? I thought 589 was Nd:YAG :wtf:
Click to expand...

I'm sure its not an yittrium ortho vanadate....but if its a YAG it must have a very low dopant level... Neodymium as a dopant gives off a purple-pink color. its very pretty...but this is more of, for lack of a better way to describe it, more of a flouride pale-green color. it just suddenly hit me today..."Wait a minute....Why is this thing not purple?!"

^(O_O)>o
 
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crazyspaz

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Yea, because Nd:YVO4 doesn't have the two needed lines for 593.5. Two crystals, a YAG and a vanadate? what the heck is that thing :wtf:

Answer: Gypsy magic.

Or CNI found something with an 1187 line lol
 
ultimatekaiser

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crazyspaz said:
Answer: Gypsy magic.
Click to expand...

YES! this must be the answer! LOL'd

crazyspaz said:
Or CNI found something with an 1187 line lol
Click to expand...

Now this might be an idea. As it is a single crystal i'm positive, but it certainly is puzzling. I'm very curious now. I may have to bust out my book on lasing mediums and the good ol' internet and see what they've been smoking to come up with this! (and this is a 589nm not a 593.5nm laser so it would be 1178)

(╯°Д°）╯︵ ┻━┻

IMG_0786_zpsdaa917ba.jpg
 
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crazyspaz

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Ah yea my bad, typo. Wonder how much that tiny little crystal is worth o_O
 
ultimatekaiser

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not sure since i dont know what it is...but it measures pretty typical, 3x3x2mm &
the doubler measures 2x2x10mm
 
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crazyspaz

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It would be cool if you make a TEC cooled set up, see how much power you can get out of the set


Also, random side note, but it looks like there are 2 drivers- am I correct in assuming one is just the standard driver, while the other is responsible for the pulsing?
 
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ultimatekaiser

ultimatekaiser

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crazyspaz said:
It would be cool if you make a TEC cooled set up, see how much power you can get out of the set
Click to expand...

If they are what I think they are, I should be able to get over 50mW in theory if I had a strong enough pump, good alignment with low waste, and a little luck. I am considering rebuilding it, but I don't have time lately. If I do I'll be sure to share though.
 
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