Access

Letter

Nature Physics 2, 521–525 (1 August 2006) | doi:10.1038/nphys358

Analogues of nonlinear optics using terahertz Josephson plasma waves in layered superconductors

Sergey Savel|[rsquo]|ev , A. L. Rakhmanov , V. A. Yampol|[rsquo]|skii & Franco Nori

Electromagnetic waves in layered superconductors are known as Josephson plasma waves (JPWs). An important property of JPWs is the gap in their energy spectrum: JPWs can propagate if the frequency |[omega]| is above the Josephson plasma frequency |[omega]|J (refs|[nbsp]|1, 2), which being in the terahertz (THz) range, is important for applications.