Gallery-mode microdisc system for electrically pumped optical sources

Gallery mode microdisc system for an electrically pumped optical source, the microdisc (1) being formed on one face of a substrate (2) and being parallel to the substrate, the part of the microdisc resting on the substrate being referred to as the lower part, the part of the microdisc opposite to the lower part of the microdisc, or upper part, being provided with an electrical contact referred to as the upper contact (6), the central part (5) of the microdisc being electrically neutralised in order to prevent the passage of an electric current through said central part, characterised in that:

• the lower part of the microdisc is provided with an electrical contact referred to as the lower contact (4),
• the upper part of the microdisc is covered with a protective layer (3) of electrically insulating material with an optical index lower than the optical index of the material constituting the microdisc.