Generation of THz radiation due to 2D-plasma oscillations in interdigitated GaN quantum well structures at room temperature

A. Penot (1, 2) , Jeremie Torres (1, 2) , P. Nouvel (1, 2) , Luca Varani (1, 2) , Frederic Teppe (3) , Christophe Consejo (3) , Nina Diakonova (3) , Wojciech Knap (3) , Y. Cordier (4) , S. Chenot (4) , M. Chmielowska (4) , Pavel Shiktorov (5) , Evgenij Starikov (5) , Viktoras Gružinskis (5)

1 IES - Institut d’Electronique et des Systèmes
2 TéHO - Térahertz, hyperfréquence et optique
3 L2C - Laboratoire Charles Coulomb
4 CRHEA - Centre de recherche sur l'hétéroepitaxie et ses applications
5 Semiconductor Physics Institute (Vilnius)

We report on room temperature electrically-induced terahertz emission from interdigitated GaN quantum well structures. The emission spectrum has been analysed in a Michelson interferometer using a 4K-Si bolometer as a terahertz detector. A resonant peak at the frequency of around 3 THz was observed in emission spectra. A threshold behaviour of the resonance with respect to applied voltage takes place. By using the proposed analytical model the measured/observed experimentally resonant behaviour of emission spectra is interpreted as a result of ungated stream-plasma instability in the channel.

Mots clés: plasma waves; terahertz radiation emission

Domaines: Electronique

A. Penot, Jeremie Torres, P. Nouvel, Luca Varani, Frederic Teppe, et al.. Generation of THz radiation due to 2D-plasma oscillations in interdigitated GaN quantum well structures at room temperature. Lithuanian Journal of Physics, 2014, 54 (1), pp.58 - 62. ⟨10.3952/physics.v54i1.2848⟩. ⟨hal-01636434⟩