August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【244】Hybrid plasmon-phonon surface modes at CdZnO-sapphire interfaces: Grating coupling and applications

Sep 2, 2021, 3:15 PM
Room C

Room C

Talk Surfaces, Interfaces and Thin Films Surfaces, Interfaces and Thin Films


Eduardo Martínez Castellano (Universidad Politécnica de Madrid)


Recently, CdO has been proposed as a very promising material for IR plasmonics due to its high plasma frequency and low damping. However, low propagation lengths and broad minima are common limitations with CdO surface plasmons.
To overcome these limitations, we propose the use of thin high quality crystalline CdZnO layers grown on sapphire substrate. Hybrid surface modes arise from the interaction between the high energy phonons of the sapphire and CdZnO surface plasmons. Here, we design and realize gold gratings to such CdZnO layers and successfully couple mid-IR light with these hybrid modes and discuss their potential applications.

Primary author

Eduardo Martínez Castellano (Universidad Politécnica de Madrid)


Georg Marschick (TU Wien) Dr Julen Tamayo-Arriola (Universidad Politécnica de Madrid) Javier Yeste (Universitat de València) Dr Miguel Montes Bajo (Universidad Politécnica de Madrid) Prof. Vicente Muñoz-Sanjosé (Universitat de València) Prof. Gottfried Strasser (TU Wien) Borislav Hinkov (TU Wien) Prof. Adrián Hierro (Universidad Politécnica de Madrid)

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