Phonon-enhanced nonlinearities in hexagonal boron nitride

• Main Authors: Ginsberg, Jared S., Jadidi, M. Mehdi, Zhang, Jin, Chen, Cecilia Y., Tancogne-Dejean, Nicolas, Chae, Sang Hoon, Patwardhan, Gauri N., Xian, Lede, Watanabe, Kenji, Taniguchi, Takashi, Hone, James, Rubio, Angel, Gaeta, Alexander L.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2024
• Subjects: Engineering; Nonlinear system; Phonon
• Online Access: https://hdl.handle.net/10356/173862
• Institution: Nanyang Technological University

Polar crystals can be driven into collective oscillations by optical fields tuned to precise resonance frequencies. As the amplitude of the excited phonon modes increases, novel processes scaling non-linearly with the applied fields begin to contribute to the dynamics of the atomic system. Here we s...