Abstract: Disclosed herein is a triode-type field emission device, in particular for high frequency applications, having a cathode electrode, an anode electrode spaced from the cathode electrode, a control gate electrode arranged between the anode electrode and the cathode electrode, and at least a field-emitting tip; the cathode, control gate and anode electrodes overlapping in a triode area at the field-emitting tip and being operable to cooperate with the field-emitting tip for generation of an electron beam in the triode area. The cathode, control gate and anode electrodes do not overlap outside the triode area, and have a main direction of extension along a respective line; each of these respective lines being inclined at a non-zero angle with respect to each one of the others.

Abstract: A light (2) emitting system (1) includes an optical cavity (10) having at least one optical mode and including at least one transmissive reflector (12), a first set (20) of quantum wells (21, 22) and elements (31, 32, 33) of electrical injection of the quantum wells of the first set. The quantum wells of the first set are arranged so that at least one of their electronic resonances is a strong coupling regime with an optical mode of the optical cavity and emits a light according to a mixed exciton-polariton mode. The optical cavity further includes a second set (40) of quantum wells (41, 42, 43, 44, 45) arranged outside of the direct range of the elements of electrical injection and arranged in relation to the quantum wells of the first set so that at least one of their electronic resonances is in a strong coupling regime with the mixed exciton-polariton mode of the optical cavity.

Abstract: A light (2) emitting system (1) includes an optical cavity (10) having at least one optical mode and including at least one transmissive reflector (12), a first set (20) of quantum wells (21, 22) and elements (31, 32, 33) of electrical injection of the quantum wells of the first set. The quantum wells of the first set are arranged so that at least one of their electronic resonances is a strong coupling regime with an optical mode of the optical cavity and emits a light according to a mixed exciton-polariton mode. The optical cavity further includes a second set (40) of quantum wells (41, 42, 43, 44, 45) arranged outside of the direct range of the elements of electrical injection and arranged in relation to the quantum wells of the first set so that at least one of their electronic resonances is in a strong coupling regime with the mixed exciton-polariton mode of the optical cavity.

Abstract: Disclosed herein is a triode-type field emission device, in particular for high frequency applications, having a cathode electrode, an anode electrode spaced from the cathode electrode, a control gate electrode arranged between the anode electrode and the cathode electrode, and at least a field-emitting tip; the cathode, control gate and anode electrodes overlapping in a triode area at the field-emitting tip and being operable to cooperate with the field-emitting tip for generation of an electron beam in the triode area. The cathode, control gate and anode electrodes do not overlap outside the triode area, and have a main direction of extension along a respective line; each of these respective lines being inclined at a non-zero angle with respect to each one of the others.