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Old 05-27-2014, 06:24 PM #17
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Default Re: Fun with a Ruby laser Rod [pic heavy]

nifty!

Thanks for sharing... good stuff.


/c


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Old 06-07-2017, 12:43 AM #18
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Default Re: Fun with a Ruby laser Rod [pic heavy]

Hi..I am curious if you ever got the ruby to threshold and beyond??
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Old 06-07-2017, 12:52 AM #19
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Default Re: Fun with a Ruby laser Rod [pic heavy]

The pictures don't seem to work from my connection, anyone else having problems too?
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Old 06-07-2017, 12:55 AM #20
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Default Re: Fun with a Ruby laser Rod [pic heavy]

Seem to be working ok for me.
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Old 06-07-2017, 02:30 AM #21
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Default Re: Fun with a Ruby laser Rod [pic heavy]

Why are we in this old thread? Is there something new that isn't apparent from the new posts? Last time I talked to ultimatekaiser he hadn't done anything more with this rod. I've seen these types of rods before and one only pumps the Cr3+ doped part. The mirrors are separate and are placed parallel to each other at an integer number of 694nm times in length. This is most easily done with the use of a He-Ne laser. Anyway, that's all I know about this particular thread.
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Old 06-07-2017, 04:40 AM #22
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Default Re: Fun with a Ruby laser Rod [pic heavy]

This is an ancient post....and no, I sold this rod, but I do have 2 others that are much higher quality now, as well as an HR. I have made small ruby lasers...it's not too hard. finding the optics at a good price is hardest. assembly isn't too bad. Lamps are stupid expensive though.
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Old 06-07-2017, 05:02 AM #23
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Default Re: Fun with a Ruby laser Rod [pic heavy]

I just noticed this thread was revived. Whatever nice pics. I dreamed about getting ruby laser in the past. They are reminding me the physics history.

Seeing this awesome fluorescence I have to ask: Did you try to experiment with something else than flash lamps for pumping to get laser? If I remember well, there was diode pumping discussed, but I did not find whether it might actually work.
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Old 06-07-2017, 09:01 AM #24
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Default Re: Fun with a Ruby laser Rod [pic heavy]

It's theoretically possible with 405nm diodes, but at the time the power required was unattainable. Nowadays, might be possible with stronger diodes... But you'd need so much power it'd be difficult. Flash lamps are probably really the only realistic way of a getting the power density needed while maintaining a good setup. Would be a fun experiment if I had the time and money though.
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Old 06-07-2017, 10:59 AM #25
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Default Re: Fun with a Ruby laser Rod [pic heavy]

..thanks for the responses...glad forum is alive and well....old post??..not to the new guy ��...diode pumped maybe with the 3.6w blues available today... always wanted to make a ruby laser since 1963/4 when at the tender age of 7 i read and reread an article in reader's digest.." lasers the light fantastic "...i guess maybe I. 2012 or so some place in Europe made a cw ruby...didn't make it in the market though... couldn't find out much on the innards though...maybe 532 pump...
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Old 06-07-2017, 11:23 AM #26
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Default Re: Fun with a Ruby laser Rod [pic heavy]

Quote:
Originally Posted by ultimatekaiser View Post
It's theoretically possible with 405nm diodes, but at the time the power required was unattainable. Nowadays, might be possible with stronger diodes... But you'd need so much power it'd be difficult. Flash lamps are probably really the only realistic way of a getting the power density needed while maintaining a good setup. Would be a fun experiment if I had the time and money though.
Thanks. I could imagine some little rod diode pumped with high powered 405 nm. Since laser diode has narrower spectre and is absorbed well, therefore I guess the efficiency of conversion might be much better than with flashlamp with much wider spectre, where only tiny part is accepted. Still, the question is, if diode pumping is sufficent to create sufficient popullation inversion, as you mentioned.
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