We experimentally observed no change in second-harmonic signal and an enhancement of the third-harmonic signal from metal-insulator-metal nanostructures, which are consistent with the nonlinear photon-assisted electron tunneling current flowing through them.
© 2018 The Author(s)
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
Login to access OSA Member Subscription