S. Anguiano, A. E. Bruchhausen, I. Favero, I. Sagnes, A. Lemaître, N. D. Lanzillotti-Kimura, and A. Fainstein
Phys. Rev. A 98, 013816 (2018) – Published 9 July 2018

Here, the authors study the dynamics of photoexcited carriers and their influence on pump and probe coherent phonon generation and detection in nanomechanical resonators. They demonstrate that for small micropillars (<10μm), the optical behavior is dominated by carrier recombination while for big ones the diffusion of these carriers plays the main role.