Kvant now have a new colour - 607nm!

[White-Light]

Was exploring Martin's site when I came across this:

http://www.synchrovision.co.uk/produ...r-module-kvant

Kvant are now doing DPSS in 200mw 607nm Orange modules!

Don't know what the pricing is but may interest some.

[steve-o]

"Price on request" mmm. Anybody wanna request? I'm not 'cause I know I can't afford it. 607 would be a nice addition to a RRGBB. The more lines, the better, right?

[White-Light]

I think you might be surprised on price if 523nm is anything to go by. They are price on request also, but I understand they may be replacing 532nm as and when powers allow so I can't see the prices being that different.

http://www.synchrovision.co.uk/523nm-new-green

It just might be the same with 607nm.

I think we're staring to see some exciting times with new colours emerging.

[andythemechanic]

Wow, I am wondering about the technology used in this laser. 607nm is a Pr:Ylf wavelength, no doubling needed and can be pumped with 450nm.

[steve-o]

Is that as in being pumped with 445-450- ish ?

[andythemechanic]

Yes, take a look here: http://www.opticsinfobase.org/oe/abs...i=oe-15-8-5172
Very interesting little crystals. Who is going to organize a groupbuy?

[dave]

Pretty interesting paper there

Yes, take a look here: http://www.opticsinfobase.org/oe/abs...i=oe-15-8-5172
Very interesting little crystals. Who is going to organize a groupbuy?

[LaNeK779]

Yes, take a look here: http://www.opticsinfobase.org/oe/abs...i=oe-15-8-5172
Very interesting little crystals. Who is going to organize a groupbuy?

anything that uses 445nm as a pump diode is of immediate interest for every wavelength starved hobbist out there

my (uneducated) question is, can we do it? and what optics (and costs) are we looking at here?

[danielbriggs]

Heh.

A while back I spent a significant amount of time and effort looking into the Pr³⁺:YLF x-tal (and some other similar ones).
I sourced about two dozen good papers and a fair chunk of knowledge on the subject; a handful are very very good. At the time of research (Oct 2011), about the entire state of the art was covered in the literature review.

I spoke to various companies, designed a test rig, and added half a cup of thinking.

"Back of the envelope" type calcs suggest ~300mW of 639nm should be possible when everything is right; there is scope for a little more before getting fancy. But that really is the end-game power one could expect from a single 445nm diode, and would not be had straight off the bat.

Output at 607nm should be similar; output power could easily be half that if the OC coatings are slightly different than what I designed around.
523nm output is also possible, albeit at reduced efficiencies... (there's even a possible useable line at 479nm and 546nm)


The test setup:











The rig I designed may seem over complex, but there is a reason for everything as it is. It was in no way designed as a "module"; it was designed as an experiment. i.e. known parameters can be changed by known amounts and known results can be obtained in a bid to understand how to properly engineer any possible outcomes.
Could it be done a different way? Absolutely, and cheaper too! But it was designed for a little more than "hey I got red from blue".
No, I don't own shares in Thorlabs...
Is it a viable route to super-trump 638nm Mitsubishi diodes for projector use? Nope.

I put the project on hold for the time being; spending my £££ on other frivolous ventures.
Anyone wants to bankroll the development? Give me a shout!

Right... that is enough pissing on the chips of the Kvant thread.

Dan

[andythemechanic]

Hi Dan,

I though about experimenting with this crytals as well. I would be interested in your literature collection to this topic, since I don't have easy access to research papers.

Andreas