Josephson emission with frequency span 1–11 THz from small Bi2Sr2CaCu2O8+δ mesa structures

Abstract

Small-area mesa structures made of layered Bi-2212 cuprates should have many advantages as terahertz oscillators but experimental realization of such oscillators has proven difficult. Here the authors report Josephson emission from small-but-high mesas, achieving a broad frequency span of 1–11 THz.