What frequencies can we detect?

BR-549 said:

If I recall right, we can receive up to about several hundred GHz. Let's say 1000 GHz or 1 THz. With electronics.

Light is about 400 THz for red. 300-400 THz for IR optics.

Can we detect thru 1 to 300 THz? Can we detect thru those frequencies and tune like a radio? Or tuning an IR laser? No matter the process? Can we detect thru that 1 to 300 THz band spread?

Any body here know?

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BR-549 said:

OK, thanks. Let me ask you this, can one IR camera, one IR sensor detect that whole range of 1 to 300 THz? Or does it take a series of special sensors to do that? And does it take special conditions or setups, like ultra cold temps?

What would one need to detect 100 THz on their desktop?

Background. I had heard that we can detect from 10 to 300 THz with IR sensors, which was very surprising to me. How is the frequency determined?

And I had also heard that with electronics, we could detect up to several hundred GHz, lets call it 1000 GHz or 1 THz for now. And from 10 to 800 THz, the rest of the EM range, up to UV, was detected with IR and optics.

And that what was needed was a way to detect signals from 1 to 10 THz was the prize at this time.

Do you agree with that assessment?

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BR-549 said:

And that what was needed was a way to detect signals from 1 to 10 THz was the prize at this time.

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