Sum frequency generation from touching wires: A transformation optics approach

Shimon Elkabetz, K. Nireekshan Reddy, Yonatan Sivan

Research output: Contribution to journalArticlepeer-review


We employ transformation optics to study analytically nonlinear wave mixing from a singular geometry of touching plasmonic wires. We obtain the analytic solution of the near field and complement it with a solution of far-field properties. We find, somewhat surprisingly, that optimal efficiency (in both regimes) is obtained for the degenerate case of second-harmonic generation. We exploit the analytic solution obtained to trace this behavior to the spatial overlap of input fields near the geometric singularity.

Original languageAmerican English
Pages (from-to)2079-2082
Number of pages4
JournalOptics Letters
Issue number9
StatePublished - 1 May 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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