Phased-array optoelectronic emitter, comprising: ∘ a photonic chip, comprising: N waveguides forming arms of the optoelectronic emitter, with N>1; a plurality of phase shifters and of elementary transmitters placed in the arms; ∘ a laser chip, distinct from the photonic chip, comprising a laser source; ∘ characterized in that: ∘ the laser chip is joined to the photonic chip in a coplanar manner; ∘ the laser source is a flared laser source: formed of a straight single-mode section and of a section that is flared in a main plane, and that extends along an optical axis Δ and ends in a surface for emission of an optical signal; configured to emit the optical signal, a wavefront of which is circular in the main plane and centred on a position z l located in the flared section on the optical axis Δ; ∘ the photonic chip comprises a coupler, ensuring optical coupling to the flared laser source for collecting and transmitting at least one portion of the emitted optical signal, comprising: a collection input placed facing the emission surface of the flared laser source, and a transmission output comprising N rectilinear waveguides (34, 35) that are coupled to the N arms of the optoelectronic emitter and that are oriented so that their longitudinal axes are secant at the position z l. ∘ a photonic chip, comprising: N waveguides forming arms of the optoelectronic emitter, with N>1; a plurality of phase shifters and of elementary transmitters placed in the arms; N waveguides forming arms of the optoelectronic emitter, with N>1; a plurality of phase shifters and of elementary transmitters placed in the arms; ∘ a laser chip, distinct from the photonic chip, comprising a laser source; ∘ characterized in that: ∘ the laser chip is joined to the photonic chip in a coplanar manner; ∘ the laser source is a flared laser source: formed of a straight single-mode section and of a section that is flared in a main plane, and that extends along an optical axis Δ and ends in a surface for emission of an optical signal; configured to emit the optical signal, a wavefront of which is circular in the main plane and centred on a position z l located in the flared section on the optical axis Δ; ∘ the photonic chip comprises a coupler, ensuring optical coupling to the flared laser source for collecting and transmitting at least one portion of the emitted optical signal, comprising: a collection input placed facing the emission surface of the flared laser source, and a transmission output comprising N rectilinear waveguides (34, 35) that are coupled to the N arms of the optoelectronic emitter and that are oriented so that their longitudinal axes are secant at the position z l. ∘ the laser chip is joined to the photonic chip in a coplanar manner; ∘ the laser source is a flared laser source: formed of a straight single-mode section and of a section that is flared in a main plane, and that extends along an optical axis Δ and ends in a surface for emission of an optical signal; configured to emit the optical signal, a wavefront of which is circular in the main plane and centred on a position z l located in the flared section on the optical axis Δ; formed of a straight single-mode section and of a section that is flared in a main plane, and that extends along an optical axis Δ and ends in a surface for emission of an optical signal; configured to emit the optical signal, a wavefront of which is circular in the main plane and centred on a position z l located in the flared section on the optical axis Δ; ∘ the photonic chip comprises a coupler, ensuring optical coupling to the flared laser source for collecting and transmitting at least one portion of the emitted optical signal, comprising: a collection input placed facing the emission surface of the flared laser source, and a transmission output comprising N rectilinear waveguides (34, 35) that are coupled to the N arms of the optoelectronic emitter and that are oriented so that their longitudinal axes are secant at the position z l. a collection input placed facing the emission surface of the flared laser source, and a transmission output comprising N rectilinear waveguides (34, 35) that are coupled to the N arms of the optoelectronic emitter and that are oriented so that their longitudinal axes are secant at the position z l.