Ultrafast Optical Generation of Coherent Bright and Dark Surface Phonon Polaritons in Nanowires

@article{Mante2019UltrafastOG,
  title={Ultrafast Optical Generation of Coherent Bright and Dark Surface Phonon Polaritons in Nanowires},
  author={Pierre-Adrien Mante and Sebastian Lehmann and Daniel Finkelstein Shapiro and Ka Yuk Lee and Jesper Wallentin and Magnus T. Borgstr{\"o}m and Arkady Yartsev},
  journal={arXiv: Optics},
  year={2019}
}
The coherence of polaritons plays a fundamental role in numerous recent experimental observations, from strong coupling to Bose-Einstein condensation, but accessing the coherence of polaritons is a difficult task due to the high energy of plasmons and excitons. However, surface phonon polaritons offer similar promises at much lower energy. Here, we demonstrate the possibility to use visible ultrafast lasers to generate and time resolve coherent surface phonon polaritons in nanowires. We show… 

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