TeraHertz, Infrared, or something in between

My university education was as a chemist, a while ago I admit. We didn’t think about the wavelength or frequency of electromagnetic radiation in the infrared, tending to use the standard units for chemists of wavenumbers (cm-1) .

In the VUV though we swapped to Electron Volts, but did use wavelength for the visible spectrum.

Nowadays I’ve converted my mind to use wavelength across the spectrum, only to find that frequency (Terahertz) is being used for the far infrared and millimetric waves.

I’ve just spent a fair bit of time answering an enquiry from Japan for metal mirrors to work with “Terahertz”, which to me means 100um – 300um wavelength. I should have checked, as I now find out its 20THz, or as I now think of it 15um wavelength. Actually our Gold coated Copper mirrors do work well in the region of 100 – 200um, or should I say the 1.5 – 3 THz spectrum, maybe longer.

This is a nice conversion tool at a US University to convert frequency, wavelength & energy

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s