Near-field-driven thermal phonon lasing

• DOI: 10.1364/ol.539572
• Publication Date: 2024-11-15T16:00:12Z
• Authors: P. Karwat; F. D. Bello; D. D. A. Clarke; G. Pasławski; O. Hess
• Keywords: Physical optics

The extreme electromagnetic near-field environment of nanoplasmonic resonators and metamaterials can give rise to unprecedented heating effects, enabling large manipulable temperature gradients on the order 10 1 –10 2 K/nm. In this Letter, by interfacing traditional semiconductor quantum dots with industry-grade plasmonic transducer technology, we demonstrate that near-field-induced thermal gradient facilitate requisite population inversion for coherent phonon amplification lasing at nanoscale. Our detailed analysis uncovers both characteristics parameter sensitivity relaxation oscillations in system, thereby unveiling hitherto unexplored opportunities leveraging effects context thermodynamics phononics.