FAR IR LED - 10 micron

Thanks, Ian. I understand. What might be a good broadband emitter, then? I suppose I can make a tradeoff in lost power at the unneeded wavelengths. That may be unavoidable.

Jim

There are some devices which are brighter than a black-body source, but from what I can see they seem to be more in the particle physics area than something that will run off reasonable sized batteries.

Best regards, Spehro Pefhany

AIUI, there are no efficient emitters in this bandwidth, you're just looking at filtered broadband sources.

The blackbody (Planck) function increases with temperature at all wavelengths, as well as shifting toward the blue with increasing T. Thus a very hot object emits more 10-um than your hand, but you have to filter pretty aggressively, since most of the power is at shorter wavelengths.

Cheers,

Phil Hobbs

What you need is a Nernst glower:

I read in sci.electronics.design that jim_nospam snipped-for-privacy@yahoo.com wrote (in ) about 'FAR IR LED - 10 micron', on Sun, 28 Aug 2005:

An incandescent lamp? Maybe run dimmed.