Printable View
This will be the beginning of helps for you. I found it to be very usefull with a wavelengths. I have a virtual library that I use. Some I am not allowed to share.
http://web.phys.ksu.edu/vqm/laserweb...y/Cavstabe.htm
This will help in laying out the cavity if you know the ROC of the HR and output coupler.
Enjoy
Or just download this:Quote:
Originally Posted by MechEng3
PSST!
http://www.st-andrews.ac.uk/~psst/
lets you do the cavity stability, multiple element cavities , intracavity lenses and even the thermal lensing of the rod.
I've used it for years. I hear there may be problems with Vista, but they might heave been fixed.
Steve
I just want a known combination of diode, lens,, driver, and heatsink that would make a decent 635nm beam for a "reasonable" price, along with a basic instruction manual that covers assembly & tuning. :o
The stuff you smart fellers talk about makes my head hurt..... :D
Hey Randy....
How much would you pay for a 660 nm red diode (with good beam specs; under 4 mm and under 1 mrad) that made 250 mw with good analog modulation? Would you think that $200 would be a reasonable price for a complete plug-and-play package?
OK, now how about a single 660 nm laser with the same beam specs and driver, making 500 mw of power? What would think about paying $500 for one of those?
If those numbers sound like they're at least in the ball park, then I can tell you that good things will be coming in the next couple months or so. ;) (And if I open my mouth again, Mike is going to kill me...):o
Adam
Now tell me you've got a 500mw 445nm analogue blue for $700 and I'll be really impressed!!
Sorry dude... Mike is good, but he's not *that* good. (Well, at least not yet!)
Adam
Stuka likes red.......and likes what I'm reading!!
:D :D
what's that I smell? ::sniff sniff::
smells like my projector is close to being rgb!
AdamQuote:
Originally Posted by buffo
Are we talking polarised output at 500mW for $500. If so, 1 watt of red combined with a PBS for $1000 (ish) sounds reasonable.
Got to ask myself if I can last a couple of months or so ;)
Jem
I really should stop this...:o
Mike has got some amazing designs, but he's up to his eyeballs in other work. I see a vacuum in the marketplace right now, ever since Marconi basically fell off the surface of the earth, and I believe Mike's designs really are good enough to fill the void.;)
But Mike isn't all that interested in going into the laser manufacturing and selling business, and given all the irons he has in the fire right now, I can't blame him. (After all, it's not just the time to assemble and test them, it's the packaging, the shipping, the recordkeeping, the warranty issues, etc, etc...)
Nonetheless, I keep tweaking his nose (and building enthusiasm here) in the hopes that I can convince him to do a small production run just for the folks here that are crying out for a good source of affordable red with decent beam specs. I'm probably becoming a pain in the ass for him :p, but it's working...
Mike has reluctantly agreed to make a few of the lower power units to sell. The 500 mw units *may* follow later, if he can get the diode supplier to play ball re: the price of the diodes. But yes, there is a single diode solution for 500 mw of red.
Longer term (think Spring 2009), I want to see him re-visit the 635 nm project. He had one that was making 350mw with a 4 mm beam diameter and .8mrad divergence! And there was a possibility to scale that up to around 900 mw (still with a single diode, mind you!) if only the diode manufacturer would get realistic with the cost of the diodes.
It's a long story, and there are lots of frustrated calls and e-mails to suppliers and dealers involved. But there *is* hope. The technology is there, it's just a matter of price now. Well, and time, because Mike can't do *everything* all at once. (And I keep asking him, "Why the hell not?":p)
Adam