Terahertz: solutions looking for the right problems?

MY NOTE: I DON'T USUALLY INCLUDE pdf FILES AS STAND-ALONE POSTS, BUT THIS IS EXCELLENT AND VERY HELPFUL FOR THE LAY READER, LIKE ME.
http://www.etn-uk.com/Portals/0/Content/Terahertz/THz%2010/T01%20-Terahertz%20solutions%20looking%20for%20the%20right%20problems.pdf

THERE ARE SOME ERRORS IN THE CONTENTS, NOTABLY THE ASSERTION THAT PICOMETRIX IS A UK, COMPANY, AND THAT THERE AREN'T COMPACT THz UNITS ON THE MARKET TODAY.