In my lab we have a multiphoton microscope used for high resolution cell imaging. It uses a pulsed infrared laser which has a pulse width of about 20 femtoseconds (0.000000000000020 sec.) and a peak power of ~ 100 kilowatts.
I can honestly say, that's the first time I've ever heard of the word, Femtosecond. Let alone see it used in a sentence.
I guess anything's possible these days.
Who comes up with these measurements anyway?
A femtosecond is the SI unit of time equal to 10-15 of a second. That is one quadrillionth, or one billionth of one millionth of a second. For context, a femtosecond is to a second, what a second is to about 420 million years. To give another example, one femtosecond compared to one second is like the diameter of a human hair relative to the distance between the earth and moon