High-order harmonic generation from atoms ionized by femtosecond laser pulses has been a promising approach for the development of coherent short-wavelength sources. However, the realization of a ...

Nudge something away from where it was at rest, and often it will push back. And then overshoot. From atoms to bridges to wheeled luggage, much of the world is in simple harmonic motion Yesterday my ...

Our results have a number of important implications. First, because high-harmonic emission lasts only a fraction of the optical cycle, imaging the high harmonics can map the sub-cycle dynamics of the ...