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The first laser was based on a ruby rod that was mirrored at one end and partially mirrored at the other. But what gas discharge tube was used to excite the ruby rod into a lasing state?

3 months ago | [YT] | 658

@petoperceptum

And now Styropyro makes rubies with a laser. Things have come full circle.

3 months ago | 59  

@LowBudgetGamer-o6l

Ruby Rod is excited by the 5th element.

3 months ago | 89  

@simonbooth9152

I came here to make a Ruby Rhod joke only to find I’ve been thoroughly beaten to the punch 😂

3 months ago | 22  

@wellgoahead

I could have sworn its the Helium neon one😊guess i was wrong. Knowledge is the real power

3 months ago | 1  

@derekmills1080

Sometimes a degree in physics has its use. I’ll go back to sleep now. 😴

3 months ago | 16  

@safirahmed

Ruby Rhod was a fictional character in the 1997 film The Fifth Element.

3 months ago | 0  

@Infinion

I took a lasers and optics class in university and still got this question wrong. I doubted myself 😔. Now I must re-educate myself of this fact with the correct amount of lashings

3 months ago | 10  

@HFG

I honestly only understand about 6% of what you teach/discuss, but i still love it. I wish I would have learned all of this stuff 30 years ago instead of working on junk cars 😅

3 months ago | 2  

@tenlittleindians

Somebody send Clive an old November 1964 Popular Science magazine. Inside are the complete instructions for building a ruby red laser.❤

3 months ago | 1  

@jerrydurand4127

I maintained and customized industrial YAG lasers at one time. These used 4kW xeon lamps to excite them and a 3/4 hp water pump to cool the lamp and rod. Somewhere in my things I still have mirrors, a rod, and old lamps.

3 months ago | 1  

@smilerbob

Ruby Rod always needs to be excited 😁

3 months ago | 3  

@michaelparker2449

Yeah i heard Chris Tucker also has a gas discharge problem.

3 months ago | 3  

@hadibq

on of the greatest inventions that proved some old physics maths right.... I'm amazed by those great minds who worked with limited labs possibilities back then👍

3 months ago (edited) | 1  

@Drjtherrien

My thesis advisor was a student of Ted Maiman. So that makes him my academic grandfather 😁

3 months ago | 3  

@JNKYRDGEO

BIC C, YOU'RE SLOWLY GETTING ME REEDUCATED SIR. ❤💯💯💯👍

3 months ago | 2  

@joebloggs4369

I had one!! It was an old lab demonstrator model that came in a wooden hinged box.

3 months ago (edited) | 0  

@shadetreemechanicracing22

Fun fact, Chris Tucker played Ruby Rhod in the fifth element.

3 months ago | 1  

@MrWobling

Instructions unclear - we need a schematic 😂

3 months ago | 5  

@cozy7111

Knew this because of Engineerguy's phenomenal video on lasers!

3 months ago | 3  

@MobileTaz

I am disappointed that I am far from the first one to come here to make a Ruby Rhod joke....... But I am so proud of all y'all at the same time 🤣🤣

3 months ago | 0