Finally NEW KVANT 532nm modules developed!

[mixedgas]

3 actually seems honest compared to some numbers I've seen. Lets give them a chance...

Steve

[ElektroFreak]

That's true Steve.. I was just wanting to see what exactly an m^2 of 3 looks like.

[pelosh]

Ok guys. Here are calculations with few other examples from our Mr Viktor PhD



General formula:

M2 = PI*w0*Fi/La

where:


PI = 3.14
w0 = beam waist radius
Fi = half-angle divergence
La = wavelength

Examples:
Kvant Green 300mW (La = 532nm, w0 = 1.35mm, Fi = 0.4 mrad): M2 = 3.14*1.35*0.4/0.532 = 3.19

Kvant Red 5W (La = 642nm, w0 = 2.5mm, Fi = 0.8mrad): M2 = 3.14*2.5*0.8/0.642 = 9.78

Coherent Green 3W (La = 532nm, w0 = 1.15mm, Fi = 0.75mrad): M2 = 3.14*1.15*0.75/0.532 = 5.1

[ElektroFreak]

Thanks for breaking it down..

That puts an interesting spin on things IMO. Based on that math, most of the laser systems the Chinese sell as having an m^2 of 2 or less would actually be far higher given their typically higher divergence half-angle. I suspected as much, but never took the time to investigate.

It would still be sweet to see a beam profile if that can be arranged. A good, well-manufactured alternative to Chinese DPSS would be a great development, but it would be just peachy if the beam structure (or lack thereof) and modulation response is superior. I've seen some fairly ugly beams come from most high-powered Chinese DPSS lasers.. there's definitely room for improvement there. A beam that is elliptical or has hot spots will not affect the audience's opinion of a show, but it will make the guy buying the lasers and building the projectors feel a lot better about their investment.

[pelosh]

Right, I've just agreed on sending one of those to tocket in few weeks time for testing (if he's happy to do so of course).
There's no reason why we would developed and released something what we can buy from China. That would be pointless and stupid. Obviously the good modulation was one of the main goals.

[allthatwhichis]

Hey Martin; are you aware if these will be replacing the greens in the lower power projectors?

[pelosh]

Of course they will...that was the whole point. Low powered 532s from KVANT for low powered projectors (although 1 & 2W versions are on the way ) and 3W+ is still going to be JenLas and Coherent.

[ElektroFreak]

Right, I've just agreed on sending one of those to tocket in few weeks time for testing (if he's happy to do so of course).
There's no reason why we would developed and released something what we can buy from China. That would be pointless and stupid. Obviously the good modulation was one of the main goals.

I get what you're saying, but just saying it means nothing whatsoever. Actions speak louder than words. You can say "our product is superior to Chinese lasers" but I'm not going to believe it unless I see it. Is that really so hard to understand? Just because you're a Kvant representative is supposed to be enough? Am I completely out of line asking for something so simple as a beam profile? We're talking about a good bit of cash here, and I know I'm not the only person who doesn't believe everything salespeople say.. Why is it so hard to supply a beam profile? I don't get it. I guess I'll have to wait for Tocket to do it.. which, for the record, is a bit weird to me.. surely during the development a beam profiler was used.

Seriously though, based on Pelosh's responses in this thread, if I were to do business with Kvant it sure as hell wouldn't be through Synchrovision. I prefer to do business with people who behave professionally. Every single response by the spokesperson for Synchrovision has been condescending and smug. I get that Kvant is a reputable company, but I have serious doubts about Synchrovision based on many posts by their representative here in this forum, and not just this thread. It's never good practice to run off future customers by attempting to make them feel stupid for asking questions about your products. It also hurts your business when your answers boil down to "We're Kvant, we're awesome and that's all you need to know." That's a crock of shit is what that is.

I'm sure these modules are quite good given Kvant's reputation, but any further inquiries on my part will be directed to Kvant themselves.

I'm looking forward to seeing the results of Tocket's testing, if he is inclined to perform the tests.

[pelosh]

Hey El. Freak!

I am not sure what you are talking (typing) about. Have I anywhere set that I won't supply you with that profile or what? NO. It just takes bit of time as you are not only person I am trying to answer the questions to.
And if you feel stupid becouse of that, well then there's not much I can do, is it.

Also which part was condescending exactly? Is it wrong that I believe in product I sell? And that I can tell from my own experience that IT IS better than some others? I think that's actually good. I can't imagine to sell and take responsibility for something which I would think about as rubbish.

Quite a few people set that KVANT machines are awesome when they saw them so for some it probably is awesome - nothing wrong with that.

For me is awesome that you are attacking me from behind the letters on the screen without knowing me personally or having the experience with being my customer...it's the easiest thing - to blame someone. Thaks for that.

[norty303]

I get what you're saying, but just saying it means nothing whatsoever. Actions speak louder than words. You can say "our product is superior to Chinese lasers" but I'm not going to believe it unless I see it. Is that really so hard to understand? Just because you're a Kvant representative is supposed to be enough? Am I completely out of line asking for something so simple as a beam profile? We're talking about a good bit of cash here, and I know I'm not the only person who doesn't believe everything salespeople say.. Why is it so hard to supply a beam profile? I don't get it. I guess I'll have to wait for Tocket to do it.. which, for the record, is a bit weird to me.. surely during the development a beam profiler was used.

I don't quite get why you're jumping down his neck on this? He has said he's going to submit a unit for independent testing, which is worth more than the specs provided by the manu in most people's opinion.

He hasn't really addressed the beam profile question in his response, but you seem to have read it as he's said he's not going to provide one.

I think you may just be venting some of your previous frustration about how Pelosh responds to things here.