Photon-phonon coupling holds strong potential for sound and temperature control with light, opening new horizons in detector technology, remote sound generation and signal broadcasting. Here, we report on a novel stereoscopic ultralight converter based on a three dimensional graphene structure 3G-sponge, which exhibits very high absorption, near-to-air density, low inertia, and negligible effective heat capacity. We studied the heat and sound generation under the excitation of electromagnetic waves. 3G-sponge shows exceptional photon to heat and sound transduction efficiency over an enormous frequency range from MHz to PHz. As an application, we present an audio receiver based on a 3G-sponge amplitude demodulation. Our results will lead to a wide range of applications from light-controlled sound sources to broadband high-frequency graphene electronics.
Cite
@article{arxiv.1906.09396,
title = {Universal coupling between the photonics and phononics in a 3D graphene sponge},
author = {M. Shalaby and C. Vicario and F. Giorgianni and M. A. Gaspar and P. Craievich and Y. Chen and B. Kan and S. Lupi and C. P. Hauri},
journal= {arXiv preprint arXiv:1906.09396},
year = {2019}
}