Alaskan
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561nm Yellow YAG (?) from Lumenis Varia Eye Laser
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Alaskan
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Here's a photo of the YAG for the green 532nm SHG.
The doubling SHG KTP crystal to convert 1064nm IR to 532nm visible green is in the copper mount on the left. The YAG which is pumped with an 808nm IR diode to produce 1064nm IR in the middle, the 20W 808nm diode bar (max power, not what it is running at) on the right side. I am assuming the non-linear SHG crystal is KTP.
The 1064nm energy from the YAG in the middle of the photo is turned around and shot into the SHG crystal on the left from a mirror which would be where the camera is at, that same mirror allows 532nm green to leave the cavity while continuing to reflect 1064nm IR back and forth into the SHG crystal which has a highly reflective mirror behind it.
This is intracavity SHG, the NL crystal could be outside of the IR mirror cavity, but is more efficient when placed within it, requiring less 1064nm power, if I understand correctly.
The doubling SHG KTP crystal to convert 1064nm IR to 532nm visible green is in the copper mount on the left. The YAG which is pumped with an 808nm IR diode to produce 1064nm IR in the middle, the 20W 808nm diode bar (max power, not what it is running at) on the right side. I am assuming the non-linear SHG crystal is KTP.
The 1064nm energy from the YAG in the middle of the photo is turned around and shot into the SHG crystal on the left from a mirror which would be where the camera is at, that same mirror allows 532nm green to leave the cavity while continuing to reflect 1064nm IR back and forth into the SHG crystal which has a highly reflective mirror behind it.
This is intracavity SHG, the NL crystal could be outside of the IR mirror cavity, but is more efficient when placed within it, requiring less 1064nm power, if I understand correctly.
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diachi
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Here's a photo of the YAG for the green 532nm SHG.
The doubling SHG KTP crystal to convert 1064nm IR to 532nm visible green is in the copper mount on the left. The YAG which is pumped with an 808nm IR diode to produce 1064nm IR in the middle, the 20W 808nm diode bar (max power, not what it is running at) on the right side. I am assuming the non-linear SHG crystal is KTP.
The 1064nm energy from the YAG is turned around and shot into the SHG crystal from a mirror which would be where the camera is at, that same mirror allows 532nm green to leave the cavity while continuing to reflect 1064nm IR back and forth into the SHG crystal which has a highly reflective mirror behind it.
At the very least, you'll have nice mounts, crystals and other components to reuse if this ends up having any issues.
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Yep, I have spare YAG assemblies for the red and yellow, just don't have spare non-linear crystals.
Edit: Adding a top down photo:
Notice there isn't a temperature probe on the YAG crystal, only the diode and NL crystal need to be monitored and adjusted to be at a specific temp.
The diode appears to have a pair of resistors mounted to it for heating, the NL crystal a TEC under it. You can see the wires running to the TEC to heat or cool the NL xtal on the right side, along with the thermistor wires.
Edit: Adding a top down photo:
Notice there isn't a temperature probe on the YAG crystal, only the diode and NL crystal need to be monitored and adjusted to be at a specific temp.
The diode appears to have a pair of resistors mounted to it for heating, the NL crystal a TEC under it. You can see the wires running to the TEC to heat or cool the NL xtal on the right side, along with the thermistor wires.
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it looks amazing Alasken
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My wife is amazing to be willing to take these photo's for me while I am working over seas.
Edit: a ray diagram - updated with BAW optics identification.
Edit: a ray diagram - updated with BAW optics identification.
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Alaskan
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Ha, I already updated the photo with more info. For big photo's like that, quoting them makes the thread a bit long? Maybe no one else cares and I'm too, what's the word? I am surprised she hasn't said anything about the stuff I keep buying, maybe because I've been spending so much on that apartment.
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I've edited my post to not include the photo.
Lol, yes you can fill up the original house with more lasers, if you finish up the apartment to get away from them.
Lol, yes you can fill up the original house with more lasers, if you finish up the apartment to get away from them.
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I already have too much laser stuff, but mostly because each item is in it's own box from stuff I've bought on ebay and not unpacked it yet. The question of how I can get it all to Ukraine, if I retire there to live in that apartment, is already a big one. Costs too much to ship stuff overseas if moving.
It's like the 5th time I've edited that photo, I think I'm done now. Spastic editing guy that I am. I just added the YAG output wavelengths, not saying I understand how they get 1319 nm out of that YAG for the red laser, I don't see how yet. For the "yellow" or 561 nm YAG I see what they are doing, filtering out the 1064 nm and only letting 1122 nm through, for the green, of course 1064nm is easy as it is the highest power peak out of an ND:YAG and if you let it alone, all of the power goes to that wavelength.
Another edit to add this from the original ebay listing, in case anyone is interested:
It's like the 5th time I've edited that photo, I think I'm done now. Spastic editing guy that I am. I just added the YAG output wavelengths, not saying I understand how they get 1319 nm out of that YAG for the red laser, I don't see how yet. For the "yellow" or 561 nm YAG I see what they are doing, filtering out the 1064 nm and only letting 1122 nm through, for the green, of course 1064nm is easy as it is the highest power peak out of an ND:YAG and if you let it alone, all of the power goes to that wavelength.
Another edit to add this from the original ebay listing, in case anyone is interested:
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It's called perfectionism. Could you possibly edit again and remove the stray text box to the left. Oh, and also I would like to see the percentage of reflectivity/transmittance for every optical element. :crackup: Only kidding.
Remember that Nd:YAG emits multiple lines at once, but some are weaker than the others. Depending on the line, it may also only become present when involved in a cavity with the appropriate coatings for that line. The YAG will most definitely be outputting 1064nm, but it can also output the 1319 and 1122nm. Oh, with some genius at work, you could split the 1319nm line to create a SFG with 1064nm to produce a 589nm.
Could you possibly edit again and remove the stray text box to the left. Oh, and also I would like to see the percentage of reflectivity/transmittance for every optical element. :crackup: Only kidding.Remember that Nd:YAG emits multiple lines at once, but some are weaker than the others. Depending on the line, it may also only become present when involved in a cavity with the appropriate coatings for that line. The YAG will most definitely be outputting 1064nm, but it can also output the 1319 and 1122nm. Oh, with some genius at work, you could split the 1319nm line to create a SFG with 1064nm to produce a 589nm.
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Damn, missed that! Wish I could get 589 out of it, I wonder why splitting that won't work. I read somewhere if you don't filter for other lines that an ND YAG will put most, if not all of its power into 1064 nm. Maybe they just meant that was the predominant line, and there isn't anything more to it than that.
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Haha. Need to edit.
1064nm is the predominant line, however it is possible to get the other lines without anything fancy otherwise we wouldn't have our 589 spartans. Just beam split the 1319 and split the 1064nm and combine them using a coated NLO crystal. It won't be as efficient as if you had one crystal lasing at both, but it should still work.
1064nm is the predominant line, however it is possible to get the other lines without anything fancy otherwise we wouldn't have our 589 spartans. Just beam split the 1319 and split the 1064nm and combine them using a coated NLO crystal. It won't be as efficient as if you had one crystal lasing at both, but it should still work.
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I'd sure like to have some 589nm power someday
What do you think those adjustable optics up top in the photo are for between the dichroic mirrors? Just for centering the beams?
What do you think those adjustable optics up top in the photo are for between the dichroic mirrors? Just for centering the beams?
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Wouldn't all of us here. If you have the money you can get 200mW+ in lab form.
They could be anything. Corrective optics, waveplates?
If you have the money you can get 200mW+ in lab form. They could be anything. Corrective optics, waveplates?
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Maybe someone will give more ideas, or knows. If I get 589, I want more than 200 mw, I want 500 or a watt! OK, too damn expensive:
http://www.ebay.com/itm/589nm-500mW...-laser-power-adjustable-ISO9001-/282008960341
Edit: adding a close up photo of them. Appears one of them is way out of alignment.
http://www.ebay.com/itm/589nm-500mW...-laser-power-adjustable-ISO9001-/282008960341
Edit: adding a close up photo of them. Appears one of them is way out of alignment.
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