Patent ID: 8498318

Claim:
Light ( 2 ) emitting system ( 1 ) comprising an optical cavity ( 10 ) having at least one optical mode and comprising: at least one transmissive reflector ( 12 ), a first set ( 20 ) of quantum wells ( 21 , 22 ), and means ( 31 , 32 , 33 ) of electrical injection of said quantum wells ( 21 , 22 ) of the first set ( 20 ), said quantum wells ( 21 , 22 ) of the first set ( 20 ) being arranged in such a way that at least one of their electronic resonances is a strong coupling regime with an optical mode of said optical cavity ( 10 ) and emits a light ( 2 ) according to a mixed exciton-polariton mode, wherein said optical cavity ( 10 ) further comprises a second set ( 40 ) of quantum wells ( 41 , 42 , 43 , 44 , 45 ) arranged outside of the direct range of said means ( 31 , 32 , 33 ) of electrical injection and arranged in relation to said quantum wells ( 21 , 22 ) of the first set ( 20 ) in such a way that at least one of their electronic resonances is in a strong coupling regime with said mixed exciton-polariton mode of said optical cavity ( 10 ), wherein, between a bottom Bragg reflector and a top Bragg reflector, the optical cavity comprises a set of intermediate layers, said intermediate layers being successively said second set of quantum wells, a N-doped region, an undoped gap region, said first set of quantum wells, and a P-doped region, and wherein said means of electrical injection comprises plural electrical contacts, said electrical contacts operating in pairs, in which for each pair, a first contact of each pair is fixed to the N-doped region and a second contact of each pair is fixed to the P-doped region.