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FrozenGate by Avery

DPSS theory for colors besides 532nm...

B

Brett

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Ok, I am wondering if anyone has access to any good web based sources of research for 593.5nm and 473nm DPSS technology...and of course, better yet, home brewing.  Of course, I've read the DPSS section of Sam's laserfaq....but it seems to me there was only brief mention of other colors besides green as a viable project for the home builder.  I think he touched on crystals using other dopants, like LBO and BiBO, but I don't recall that he went into any detail, nor do I remember any metion of 593.5nm yellow.  Perhaps I skimmed through and missed it, or maybe there were case studies and text from people who had tried/succeeded with other colors.  

I understand that this is something extremely difficult for the amateur, and that the crystals are really hard to get, but I know they can be had occasionally.  I would at least like to be more familiar with how these other DPSS lasers achieve their wavelengths (especially 593.5) if no other reason than to already have some knowledge in my brain for when the prices eventually come down.  Also, if I decided to purchase a blue or yellow laser in the future, I would enjoy it more know I understood its theory of operation.

Someone on here mentioned (to a guy trying to buy LBO and build a blue DPSS) that there are good books available on DPSS theory.  I'd like to read these.  Any ISBN numbers?

...

I'm still gathering parts for my first home brew 543nm green project, and I plan on taking things step by step, only going up in power after I've mastered the basics.  But I can see green not being enough for me after a couple years.

-Brett

*edit* I trust someone will let me know if editing my post is not preferable to double posting. I just found a web site that explained that 593.5nm lasers use a Nd which lases at two separate frequencies 1064 and 1432nm, and this is then fired into a doubling crystal. Naturally this has me wanting more info. */edit*
 





Orange lasers are pretty crazy and involve getting the crystal to lase at two wavelengths, then frequency summing them together to produce the orange color. (Can't think of the wavelengths off hand atm, it's late) nor can i think of any books. But there is information on the internets for this kind of stuff. Blue lasers are just harder because they use more picky crystals and operate at a much lower efficiency (1-3% or so) vs as much as 30% for 532nm.
 
Thank you.  I guess I was editing my post while you were posting, but the frequencies above I found on a couple different sites...however, they were pretty sparse on technical information and theory.  I would really like to soak my brain with this stuff since that's how you come up with ideas sometimes...  Thanks for your thoughts though. You said there was stuff on the internet...perhaps I missed something in Sam's faq.

Am I to understand that the arrangement/alignment of the yellow system is not as picky or temperature dependent?  Is it simply a matter of the crystals being rare and expensive?  If that's the case, one of us might someday find a source and share with the others, or perhaps in a few years prices will come down and we'll be building 50mw yellow/oranges.  Well...it doesn't hurt to dream I guess.

-Brett
 
I posted this in another thread but i'm wondering if anyone has a chart showing what crystals double what wavelengths. sams laser faq isnt too clear on every crystals wavelengths. I guess what would be ideal is a matrix with crystal and wavelength.
 
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