Research output: Contribution to journal › Article
Mixing of states in quantum wells for terahertz polariton emitters. / Iorsh, I.V.; Kaliteevski, M.A.; Ivanov, K.A.; Kavokin, K.V.
In: Technical Physics Letters, No. 8, 2013, p. 694-697.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Mixing of states in quantum wells for terahertz polariton emitters
AU - Iorsh, I.V.
AU - Kaliteevski, M.A.
AU - Ivanov, K.A.
AU - Kavokin, K.V.
PY - 2013
Y1 - 2013
N2 - Two possible InGaAs/GaAs quantum-well structures ensuring the presence of radiative transitions between the polariton states in a microresonator with a quantum well, which are accompanied by generation of terahertz photons, are discussed in this work. For the first structure, symmetry breakdown that is required for the emission of a terahertz photon is conducted in a quantum well with refractive index gradient profile, which results in mixing of the states of a polariton and a dark exciton. Parameters of the quantum well, in which the energy of the second exciton level corresponds to the upper polariton energy, are determined. A double quantum well with exciton states split due to quantum-mechanical tunneling through a barrier is used in the second structure. Symmetry breakdown, which allows one to mix an exciton with a "dark" exciton, is ensured by adjusting the energy of electron levels in a double quantum well by applying an electric field to the structure. A hole remains localized in one of the wells. © 2
AB - Two possible InGaAs/GaAs quantum-well structures ensuring the presence of radiative transitions between the polariton states in a microresonator with a quantum well, which are accompanied by generation of terahertz photons, are discussed in this work. For the first structure, symmetry breakdown that is required for the emission of a terahertz photon is conducted in a quantum well with refractive index gradient profile, which results in mixing of the states of a polariton and a dark exciton. Parameters of the quantum well, in which the energy of the second exciton level corresponds to the upper polariton energy, are determined. A double quantum well with exciton states split due to quantum-mechanical tunneling through a barrier is used in the second structure. Symmetry breakdown, which allows one to mix an exciton with a "dark" exciton, is ensured by adjusting the energy of electron levels in a double quantum well by applying an electric field to the structure. A hole remains localized in one of the wells. © 2
U2 - 10.1134/S1063785013080075
DO - 10.1134/S1063785013080075
M3 - Article
SP - 694
EP - 697
JO - Technical Physics Letters
JF - Technical Physics Letters
SN - 1063-7850
IS - 8
ER -
ID: 7520165