Dual role of longitudinal optical phonons for generation of coherent oscillations in gallium arsenide under optical pumping

Itsuki Takagi, Yuma Konno, Yosuke Kayanuma +1

We present a novel and simple picture of the generation dynamics of coherent longitudinal optical (LO) phonons and LO-phonon-plasmon-coupled (LOPC) modes by the ultrafast infrared…