That is a pretty quick calculation in the context of upper level mathematical sciences. Some of the electromagnetic calculations using Maxwell's equations around antennas get crazy. Not looking forward to going back to that after a semester off. Not to mention finishing the math degree side.
Good job though styro! Maybe there are pulsed LEDs that would fit the bill and be more efficient than flashlamps, but their cost would likely be prohibitive.
^ Yeah it really isn't that bad of a calculation in the scope of upper level courses. Five years ago that would have looked like alien writing to me. I remember taking a math test that was 3 questions, 3 hours long. I filled at least 10 pages and there were almost no numbers. I ended two classes short of a math degree. And yeah...calculations with the EM field can get nasty quickly.
A quick calculation shows that to reach total inversion in the rod, (doped 0.05% by mass Cr3+ and pumping with 400nm at 100% efficiency) you need 3854W of INPUT for every cubic centimeter of ruby rod. You need to be at half that to reach the threshold of lasing, but once it starts lasing you need to pump in even more energy to make up for that lost by the crystal.
So...you probably won't be doing that with LEDs. There's a reason those lamps for pumping ruby rods are operating in the megawatts when firing!!
One of them might be ok. But I will have to check the length of my Ruby Rod. Also have to look closely at the tubes rating. It varies by a large amount. Most are only useful for 10-50 Joules. At least two of the ones you linked to have a good rating.
Interesting they need a small inductor in series to limit the current rise time. Didn't know that with high power xenon tubes.
But if they are OC mirrors for a ruby laser, then they are the deal of a lifetime. Finding an OC mirror is one of the hardest parts about building a strong ruby laser, and I had mine custom made for me.
Thanks for the link. For the price i just ordered that book. I was aware that the whole Rod needs pumping. The chamber is one of the difficult parts to manufacture.
Thats one reason that link i posted on EBay is so tempting. Rod, Lamp and water cooled pump chamber. He also has a new lamp available. I need to ask if mirrors are included. I suspecf they might be internal or silvered Rod ends.