a plethora of hene's

[disma]

I decided to test all my hene tubes today, I thought I had at least 40 of them, but there were only 33 in the box. Out of the 33, 8 of them were bad.

 

[Asherz]

very cool Would you be willing to sell any with a PSU?

 

[disma]

They may be all spoken for, I dont know yet, but if not, then I may sell them.

 

[Asherz]

Do you mind me asking how you have so many?

 

[disma]

It rains them from time to time, and I keep having to pick em up off the lawn, no just kidding. lol.I did a weeks worth computer work for them and some other laser stuff.

 

[Morgan]

Man! If you could combine all those into one beam you'd get around 20mW!!!!!!!

It'd be nice to go outside when it's raining though and catch a few on your tongue. No wait.... That'd be stoopid. You might get one in the eye. No, wait again... THAT'S what laser goggles are for!!!

M

 

[disma]

lol! You actually made me laugh out loud with that!
there are about 32 good tubes
:crackup:

 

[Cyparagon]

Out of the 33, 8 of them were bad.

there are about 32 good tubes

Ow Ow! my brain!:wtf:

 

[disma]

I did have several more in with other stuff. have tested them all now. there are 32. The aditional ones are a slightly different tube, have the same model #, they dont have the built in ballast resistor.

 

[suiraM]

Nice collection. What PSU are you using?

 

[disma]

I was using a coherent ps, The label has been partialy removed, so I cant tell you the model no.
:yh:

 

[disma]

If anyone wants to buy one of these, get ahold of heruursciences. I have shipped them all to him in return for a fiber laser he has.

 

[john_lawson]

I'll trade you my wife for two of those working or not

 

[disma]

nah, if she doesnt like lasers, we would not get along! lol!

 

[mauswiesel]

i made a spectrograph of a 546.8 HeNe laser showing the fluorescence in the cavity :

i don't remenber how to choose a particular wavelenght, is this with the lenght of the cavity ?

 

[disma]

Thats cool, I think the coating on the mirrors is what selects the wavelength, but it may also have to do with the cavity length.

:yh: