LPF Site Supporter
- Jan 29, 2014
This subject has enough to it to keep us studying for many years, specialists on top of their areas.
The deposited HR/OC mirrors are very nice, now you don't have to mess with alignment. Those rods are hard to find IIRC.You are right, forgot it's the other way around for doping, less for CW rods. I had even chimed into to another thread once pointing out CW rods are lower doped, how could I turn that around! Only reason I was interested in this rod is it has mirrors deposited on the ends for HR and OC. I would flash lamp drive this, already have the HV power supply and flash lamps I need, just need a mount and reflector cavity, to get it to produce the best power output.
I'll have to check out the newer edition, mine is the one from 1976. The math is nice if you want to learn the theory of what's happening at the atomic level, but it requires some knowledge of differential equations to make sense of it. Luckily for those without that math knowledge, the book is still filled with design parameters and other construction considerations that are hard to find via Google.I've got a newer edition in hardcover. It is an excellent text with a fair amount of math too. I have been reading it since I got it some months ago. It is also a great reference if you need to look something up quickly, but only after you are familiar with it.
Alot of places round it up to 9. it's actually 8.5 according to most spec sheets I found. I looked them all up and verified they're all correct. though ultimately it doesn't matter as quartz still gives the desired effect. as would a razorblade most likely.If a YAG is the same hardness as a sapphire, it is a 9. Quartz is a 7, I think. I used to know these of the top of my head. I am sure Ruby and Sapphire are a 9, though.
I agree with everything you said until I got to this line. What rod are you talking about. I have no idea. The information I have came from "Solid-State Laser Engineering", by Walter Koechner. I have a late edition hardcover copy.So the odds of that rod being glass are nil. Non-zero, but very, very, low.
LSRFAQ is talking about the rod Alaskan asked the question about as to whether it is ND:YAG or ND:Glass in the OP when he asked "Guys, can someone give me an opinion of what you think this is? I'm being told it is a ND YAG by the seller and someone else who saw the photo that it is ND Glass, probably Russian manufacture." and LSRFAQ's reasoning behind the statement "So the odds of that rod being glass are nil. Non-zero, but very, very, low."---see the question in the OP .I agree with everything you said until I got to this line. What rod are you talking about. I have no idea. The information I have came from "Solid-State Laser Engineering", by Walter Koechner. I have a late edition hardcover copy.