Inverse design of nanoparticles for enhanced Raman scattering

Rasmus E. Christiansen, Jérôme Michon, Mohammed Benzaouia, Ole Sigmund, Steven G. Johnson

Research output: Contribution to journalJournal articleResearchpeer-review

112 Downloads (Pure)


We show that topology optimization (TO) of metallic resonators can lead to x223C;102x2009;x00D7; improvement in surface-enhanced Raman scattering (SERS) efficiency compared to traditional resonant structures such as bowtie antennas. TO inverse design leads to surprising structures very different from conventional designs, which simultaneously optimize focusing of the incident wave and emission from the Raman dipole. We consider isolated metallic particles as well as more complicated configurations such as periodic surfaces or resonators coupled to dielectric waveguides, and the benefits of TO are even greater in the latter case. Our results are motivated by recent rigorous upper bounds to Raman scattering enhancement, and shed light on the extent to which these bounds are achievable.
Original languageEnglish
JournalOptics Express
Issue number4
Pages (from-to)4444-4462
Publication statusPublished - 2020


  • Electromagnetic radiation
  • Purcell effect
  • Raman scattering
  • Raman spectroscopy
  • Spontaneous emission
  • Surface enhanced Raman spectroscopy


Dive into the research topics of 'Inverse design of nanoparticles for enhanced Raman scattering'. Together they form a unique fingerprint.

Cite this