3 ms·
How do you “produce pulses of light as short as a femtosecond”?
The Wikipedia article on "Laser" states: "Temporal coherence can be used to produce pulses of light as short as a femtosecond." There is no reference. Is this true and if so what is the physical method used to switch this fast?
- detaro 11y agoThere is no switching in that sense, at least not necessarily: https://en.wikipedia.org/wiki/Mode-locking https://en.wikipedia.org/wiki/Mode-locking