Optical control of coherent and squeezed phonons: major differences and similarities

TL;DR

This paper compares coherent and squeezed phonon oscillations in solids excited by femtosecond pulses, highlighting their differences and similarities in response to ultrafast optical control.

Contribution

It provides a detailed analysis of how a second ultrafast pump pulse differently modifies coherent and squeezed phonons, elucidating their distinct behaviors.

Findings

Coherent and squeezed phonons can be impulsively excited by femtosecond pulses.

A second ultrafast pump pulse significantly modifies these phonons.

The modifications differ between coherent and squeezed phonons.

Abstract

Coherent and squeezed phonon oscillations can be excited in solids impulsively by a single femtosecond pulse whose duration is shorter that a phonon period. By applying the second ultrafast pump pulse these oscillations can be significantly, but differently modified.