Old 09-03-2010, 09:07 AM #1
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Question A technical doubt - ND-YAG laser pumped with halogen ?

Hi, i just stumbled on this ebay auction:

Nd Yag Laser ~ CVI Model C92/C95 2 Watt 1064nm Class IV - eBay (item 320578545668 end time Sep-18-10 16:41:34 PDT)

First i thoughd it was a normal ND-YAG cavity, but looking at the pics, the lamp holders i mean, it seem that it have an halogen lamp, in place of the "standard" flash lamp ..... so i thoughd "WTF ??"

I've used a certain number of cavities with flash lamps, in the past, but never had an opportunity to place my claws on one that use a halogen lamp as pump ..... is this efficent, and what efficency it can have ? ..... if the seller say 2W output, and i can presume 2W CW, cause pulsed cavities are rated in Joules usually, what can be the lamp, 150 or 200W ? (considering that it does not have the "usual standard" emission spectrum for a ND-YAG rod, and may be less efficent) .....

If it's not my mistake, i mean if i have not misunderstood the pics, it's a bit unusual, as cavity .....


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Old 09-03-2010, 03:24 PM #2
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Default Re: A technical doubt - ND-YAG laser pumped with halogen ?

Eff was bad, but it works! Those old CVI lasers are on ebay all the time.
Guess its nice to have one, since you dont need a fancy driver, just power ^^
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Old 09-03-2010, 03:29 PM #3
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Default Re: A technical doubt - ND-YAG laser pumped with halogen ?

Quote:
Originally Posted by AnselmoFanZero View Post
Eff was bad, but it works! Those old CVI lasers are on ebay all the time.
Guess its nice to have one, since you dont need a fancy driver, just power ^^
LOL, say it to me ..... i still have a brand new big ER-YAG cavity that need a driver, and none apparently was able to say me any technical details (producer does not longer exist)
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Old 09-03-2010, 03:37 PM #4
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Default Re: A technical doubt - ND-YAG laser pumped with halogen ?

I got several laser-heads laying around unused...but I am about to change that. A friend is working on a driver. But I dont wanna see any schematics...should be hell lot of work!

Guess your head is water-cooled right? Air-cooled and parallel triggering wont be a problem.
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Old 09-03-2010, 04:07 PM #5
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Default Re: A technical doubt - ND-YAG laser pumped with halogen ?

No, it's a water-cooled head that was hold as "spare part" for a medical machine, and never used ..... basically, is similar to all the other cavities, the main difference is that it uses an ER-YAG rod, instead a ND-YAG, and that it emits at 2940nm, instead that the usual 1064nm of the ND-YAG ..... better for skin ablation and aesthetical surgery.

i took a pair of pics of the head and inside, so you can see ..... much bigger than my old (and actually dead) SSY one ..... in the order, the whole cavity, the shutter and the rod ends seen through the oc (shutter opened) and HR mirrors (yes, they are transparents for visible light)
Attached Thumbnails
A technical doubt - ND-YAG laser pumped with halogen ?-opened.jpg   A technical doubt - ND-YAG laser pumped with halogen ?-shutter.jpg   A technical doubt - ND-YAG laser pumped with halogen ?-hr_oc.jpg  
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Old 09-03-2010, 04:20 PM #6
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Default Re: A technical doubt - ND-YAG laser pumped with halogen ?

Nice!
Hate external mirrors though. Aligning is a pain in the ass...boring work.
I will post a schematic of the powersupply as soon as possible.
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