Beautiful Berlin Lasers

[dsli_jon]

Hey Marco -

for this job several AR/KR Mixed Gas Lasers and several JENLAS RGB (628nm, 532nm and 445nm) have been used.
The Jenlas Laser are modified to get max output at 628nm or 445nm !

Thanks for chiming-in... Yeah, I was wondering, too, about that much 445 - that it a LOT of 445! Beautiful!!

Well, there we have it - Bart, you and I each owe Steve a pint.... He said Jenlas first.. I for sure would have gone with KTP/Dye, since you can tune the dye and easily get those colors, and more-likely get that much power vs a fiber-laser, but sure, the Jenlas makes more sense...

I have this pic from years ago - I believe it is the Scheider - did Jenlas buy them out / take it over? Or are they one and the same? Either way, brilliant use of solid-state technology...

SLT_large_opt.jpg

..but great to see Ions being champions, still... Thanks for the posting, Marco! And please pass along to your mates our profound admiration for such a great job... very, very cool werk!

cheers..
J

[clandestiny]

yess, good eyes jon- seems the ions are alive and well on that project-

[dsli_jon]

Hey P -

yess, good eyes jon- seems the ions are alive and well on that project-

yep, only way to get that much cyan / blue... with that caliber of beam-quality... but Dang - 8.5W of 445 - that had to look Sooo amazing live... the pix and videos look rad enough, but that is such a bitchin color in real-life...

peace...
j

[-bart-]

Although the effect is stunning, I feel they cheated on the orange and Yellow line.
If you've got acces to a few jenlases, why not create a rainbow of 15 composite coloured beams ?

No question about it that one argon alone consumes the amount of power that could supply an entire array of Jen's.


Wouldn't 10+Watts of 593 and 561 be jawdroppin' ?

[marco]

Hi,

if you have a high power q-switched Laserscope 532 you can also use a
Raman-Cell (with internal gas return) filled with Deuterium to get bright
red (strockes) and blue (antistrockes).
With such a setup you will be able to convert arround 30-50% from
532nm to ~630nm and 10-20% from 532nm to ~457nm

greetings,
marco

[mixedgas]

Hi,

if you have a high power q-switched Laserscope 532 you can also use a
Raman-Cell (with internal gas return) filled with Deuterium to get bright
red (strockes) and blue (antistrockes).
With such a setup you will be able to convert arround 30-50% from
532nm to ~630nm and 10-20% from 532nm to ~457nm

greetings,
marco

I've got a liquid that does that for 1/200th the cost...Not a dye either. I'd publish it here, but I don't feel like giving that little bit away just yet.

Steve

Steve

[clandestiny]

hey marco- thanks for the info-








peace

[dsli_jon]

Hey P'fesser -

I've got a liquid that does that for 1/200th the cost...Not a dye either.

Reeeally...Red and Blue?? let's chat!! Does it need to 'circulate' as-in a dye-sys? Cause I've got plenty of 532 and a working 600 series....

PM-sent...
j

[ElektroFreak]

Video of Berlin lasers.. pretty awesome!!

http://www.youtube.com/watch?v=RiRhejN_dAk

[marco]

Hello Steve,

there are also some liquids doing nice Raman conversion - but you need a ramanshift
of round 3000 1/cm - not all of them have this, some have more - some less.
It would be much easier if the solid materials would have this raman shift,
but they just have arround 800-900 1/cm.
The biggest problem with all solid or liquid materials are thermal lense effects and
damage by light, so the old gas cell is working best for high power.

greetings,
marco

[mixedgas]

Hello Steve,

there are also some liquids doing nice Raman conversion - but you need a ramanshift
of round 3000 1/cm - not all of them have this, some have more - some less.
It would be much easier if the solid materials would have this raman shift,
but they just have arround 800-900 1/cm.
The biggest problem with all solid or liquid materials are thermal lense effects and
damage by light, so the old gas cell is working best for high power.

greetings,
marco

There is a new solid out with a high damage threshold, 30% conversion from green to yellow, and remarkably good self heatsinking.

Steve

[marco]

Hi Steve,
i read about some new Raman crystals, but the problem is that the shift is to low.
From green to yellow is interesting for medical application, but for an RGB source
i think it is not so usefull. Normaly the 2nd stroke is weak, so this is also not a
good solution. It would be great to have a high stable solid state raman material with
large shift - then high power RGB lasers shows become much easier

greetings,
marco