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FrozenGate by Avery

how old is this?

bugattidude

bugattidude

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(IR counts as red, so i put this thread here)

i found a old diode with a weird can on it. it thought i was funny lookin so i thought i'd share since its a 1st for me. its not powerful at all, maybe up to 10mw

the only identification:
pictures004.jpg


and the crooked can diode:
pictures002.jpg
pictures003.jpg

pictures003.jpg
pictures001.jpg
 





eh.. my bad. close enough

its really close to that, but it wasnt that small, it was a lot wider. id have to find the sled again.

but do you know the actual power of this diode?
 
I had a diode that look like that, As always I did what I do with most of my useless diodes, training about de-can diodes.. XD
 
Got some really similars from old CD readers, usually was 5 or 10 mW IR max ..... it's just a TO18 can with a "brewster" window with the angle tuned for IR in front, in place of the usual "flat" AR coated window.
 
Brewster's angle is the angle at which there are no losses through a medium at a specific polarization. So it's equivalent to an open can.
 
^ No, it's just normal :p :D

Never tought about why most of the gas lasers with external mirrors have the ends closed with plates glued or melted at angle, instead to use just AR coated plates ? ..... cause at these angles, the material that compose the windows (usually quartz at optic grade) have for the specific wavelenght of the laser less loss than an AR coating .....

Never considered as example how an He-Ne tube (that have mainly red plasma) can emit yellow and green, and not the primary red, in certain models ? ;)

:san:
 
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