High quantum efficiency of intersubband transitions in coherent tunneling of electrons through asymmetric double-barrier structures |
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Authors: | E I Golant A B Pashkovskii |
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Institution: | (1) State Research & Production Corporation “Istok,”, 141120 Fryazino, Moscow Region, Russia |
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Abstract: | A converging perturbation series that can be summed analytically has been obtained for intersubband transitions of electrons
coherently tunneling through the middle of a dimensionally quantized level in an asymmetric double-barrier structure in a
high-frequency terahertz electric field. The possibility of a substantial increase in tunneling current accompanied by either
absorption or emission of a photon has been demonstrated. The quantum efficiency of radiative transitions between dimensionally
quantized levels can be up to 66%.
Zh. éksp. Teor. Fiz. 112, 237–245 (July 1997) |
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