Direct surface cyclotron resonance terahertz emission from a quantum cascade structure

François-Régis Jasnot (1) , Louis-Anne de Vaulchier (1) , Yves Guldner (1) , Gérald Bastard (1) , Angela Vasanelli (2) , Christophe Manquest (2) , Carlo Sirtori (2) , Mattias Beck (3) , Jérôme Faist (3)

1 LPA - Laboratoire Pierre Aigrain
2 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques
3 Institute of Quantum Electronics

A strong magnetic field applied along the growth direction of a semiconductor quantum well gives rise to a spectrum of discrete energy states, the Landau levels. By combining quantum engineering of a quantum cascade structure with a static magnetic field, we can selectively inject electrons into the excited Landau level of a quantum well and realize a tunable surface emitting device based on cyclotron emission. By applying the appropriate magnetic field between 0 and 12 T, we demonstrate emission from a single device over a wide range of frequencies (1-2 THz and 3-5 THz).

Domaines: Science des matériaux [cond-mat.mtrl-sci]

François-Régis Jasnot, Louis-Anne de Vaulchier, Yves Guldner, Gérald Bastard, Angela Vasanelli, et al.. Direct surface cyclotron resonance terahertz emission from a quantum cascade structure. Applied Physics Letters, 2012, 100, pp.102103. ⟨hal-00681912⟩