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Is this the TEC?

NightExplorer96

NightExplorer96

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Sep 5, 2013
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Hey LPF,

I've noticed that when running my 447nm labby the head tends to get a little mild to the touch and not as cold as the 532nm or 655nm systems I have.

The head works fine, but I was wondering. Is this heat I feel the TEC pushing head away? Aren't all labbys 100% duty cycle? :)

-Alex
 





On most lab lasers I've had only the internals are cooled, and the case is used as the heat sink. I wouldn't consider it abnormal for the case to be warm to the touch.
 
Is it warm or hot? Warm is fine as ARG stated.
The beam/dot on the 447nm, is it nice and round or is it rectangular like 445nm hand held lasers?
 
Laser Chick said:
Is it warm or hot? Warm is fine as ARG stated.
The beam/dot on the 447nm, is it nice and round or is it rectangular like 445nm hand held lasers?
Click to expand...

It's not very warm. It's neither hot or cold, just dosent feel either haha.

The dot looks circular. Nothing like a rectangle like my 655 :)

Plus, inside the aperture seems to be optics, my 655 dosent have those.

-Alex
 
Hey guys,

Adam told me all of the lab lasers have collomating lenses, but my 655nm still has a rectangular dot. What? I thought collomating lenses made it round?

-Alex
 
well at least it's divergence is no where close to being horrible like my Oclaro 700mw... after 100 meter it is no longer a laser....it turn into a red laser with a line filter on it.
 
FUBeaches said:
well at least it's divergence is no where close to being horrible like my Oclaro 700mw... after 100 meter it is no longer a laser....it turn into a red laser with a line filter on it.
Click to expand...

Haha, that's not good!

I did some research and read some 447nm diodes can still be circular up to a certain point, then they become a "rectangle". Is this true? So 100mW's of 447nm can still be a circle?

-Alex
 
The shape of the dot is determined by the shape of the emitter. The collimating lens has nothing to do with it. As the name suggests, the collimating lens simply collimates the beam.
 
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