Link above. Applications include micrometer-scale imaging using terahertz radiation, which is less dangerous than x-rays because it's non-ionizing, and several others...though past experience suggests that the time between lab discovery and commercial products is often a decade.

Here is a December 8, 2009 article from the University of Rochester website that describes some additional uses: http://www.rochester.edu/news/show.php?id=3514