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successfully lase Pr YLF crystal

Mattronium

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That is a very interesting project. It looks like a very solid setup. Thanks for sharing it.
Why did you chose a V shaped cavity design? Just for ease of finding suitable optics or for another reason.
Are there any other laserists near you with a laser power meter you could borrow?
 



kecked

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Can you post a few more pictures of the setup. I am interested to see how the crystal is mounted.
 

cuijianw

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Feb 2, 2020
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That is a very interesting project. It looks like a very solid setup. Thanks for sharing it.
Why did you chose a V shaped cavity design? Just for ease of finding suitable optics or for another reason.
Are there any other laserists near you with a laser power meter you could borrow?
Because all the materials are paid by my self, so the cancave OCs are difficult to find and very expensive. I just buy a cheap cancave HR, and form V style cavity so I can use cheap flat mirros.
I do not know where is the power meter but I think I could try to find one.
 

cuijianw

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Can you post a few more pictures of the setup. I am interested to see how the crystal is mounted.
The crystal is mounted in a aluminum tray made by my self. Its diameter is 20 mm, with 6 mm thick. fixed by a screw column. Looking like the picture:
The tray will mounted on the holder.
 

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kecked

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Thanks for the information. Can you post a picture from the top so I can see the full layout? I am thinking to try building this but take that last mirror and replace it with a grating to make it an external cavity style v fold. Wondering if I can tune the cavity then and have a shot at mode locking it. Unlikely.

do you think the crystal could handle being pumped with a 5-9w 445nm diode? Not sure what the absorbsnce spectrum looks like.

have you tried modulation yet? Curious to see if it would be a 2w or so 640nm replacement for multi mode diodes. My actual use is if I get mode locked to try and replace out some picosecond dye lasers.

also thinking to set this up like a ti:sap. And double end pump it. Just take time and money. Something I am in short supply of!

this is really exciting to see. I was unable to source the crystal before for under 1000usd.
 
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cuijianw

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Feb 2, 2020
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Thanks for the information. Can you post a picture from the top so I can see the full layout? I am thinking to try building this but take that last mirror and replace it with a grating to make it an external cavity style v fold. Wondering if I can tune the cavity then and have a shot at mode locking it. Unlikely.

do you think the crystal could handle being pumped with a 5-9w 445nm diode? Not sure what the absorbsnce spectrum looks like.

have you tried modulation yet? Curious to see if it would be a 2w or so 640nm replacement for multi mode diodes. My actual use is if I get mode locked to try and replace out some picosecond dye lasers.

also thinking to set this up like a ti:sap. And double end pump it. Just take time and money. Something I am in short supply of!

this is really exciting to see. I was unable to source the crystal before for under 1000usd.
I think the following picture should help.
屏幕快照 2020-02-06 21.33.26.png

I do modulate the blue laser because when supply current rises, the output wavelength will shift from 445 to 450 nm. Modulation would avoid this condition. I think if you use more pumped power, the crystal holder could need water cooled but I am not try. My blue laser is just 1.6 W, using full pump power the crystal is not very hot. Yet I am not try this condition very often.
 

kecked

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excellent that is just what I was looking for. Well if I get the wild hair to spend on the crystal I have the other optics.
 

Phillip

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Nov 11, 2007
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Hello!
What you wanna do with this? At all we working on such lasers - the maximum Power i now get out of one of our setups was about 2,7W 639nm. We do have a lot of different OC mirrors, if someone will need - and even some crystals.
Best regards,
Phillip
 

kecked

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Well I wanted to use it to make a mode locked picosecond laser. I also want to try using Raman shifting of the orange line to 575nm or there about or the green line up to yellow. All I need is about 40mw at 5 picoseconds in an 8mhz train. Replacing a dye laser. Not sure thats possible but would like to try. Worst case it’s a nice 2w 640nm beam for a projector. The crystal is stupid expensive but if it actually replaced a dye laser and 5W yag it would be a real cheap solution. I have my doubts. I did exactly zero research into this as I wasn’t going to buy the crystal.
 

cuijianw

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Feb 2, 2020
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Hello!
What you wanna do with this? At all we working on such lasers - the maximum Power i now get out of one of our setups was about 2,7W 639nm. We do have a lot of different OC mirrors, if someone will need - and even some crystals.
Best regards,
Phillip
I am making this just for fun. I plan to lase the device at orange color (604 or 607nm) but I cannot find appropriate OC mirrors.
 

cuijianw

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Feb 2, 2020
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Well I wanted to use it to make a mode locked picosecond laser. I also want to try using Raman shifting of the orange line to 575nm or there about or the green line up to yellow. All I need is about 40mw at 5 picoseconds in an 8mhz train. Replacing a dye laser. Not sure thats possible but would like to try. Worst case it’s a nice 2w 640nm beam for a projector. The crystal is stupid expensive but if it actually replaced a dye laser and 5W yag it would be a real cheap solution. I have my doubts. I did exactly zero research into this as I wasn’t going to buy the crystal.
I think raman shipfting is impossible. I cannot find reports about it.
 

kecked

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Jun 18, 2012
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491
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Look up barium nitrate. It’s possible but low power and not picosecond or mode locked. I bought an lbo for 575 off eBay a while back as well. That’s not raman however and finding the ir is hard.
 




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