Topologic insulator surface emitting laser system

A laser source comprising a plurality of lasing units arranged within an emitting plane and configured to form a topological structure, wherein each of the lasing units is configured as a vertical cavity surface emitting laser (VCSEL) capable to emit radiation component substantially perpendicular to said emitting plane, the lasing units being arranged in a plurality of unit cells, each including a plurality of the lasing units optically coupled between them, said plurality of the unit cells comprising at least two sub-arrays of the lasing units of at least two different configurations, respectively, located in at least two adjacent regions, thereby defining an arrangement of adjacent lasing units along an interface region between said at least two adjacent regions, the VCSELs of each of said at least two sub-arrays of the lasing units being arranged such that most of energy is emitted outside the emitting plane and a portion of the energy flows in-plane, thereby defining an arrangement of the lasing units of the unit cells with in-plane coupling of the lasing units along said interface region forming at least one topological state with a topological protection along a topological path within said interface region, providing collective emission forming a uniform coherent beam directed substantially perpendicular to the emitting plane.

A laser source comprising a plurality of lasing units arranged in unit cells placed within a plane and configured to form a topological structure, wherein each of the unit cells includes a plurality of the lasing units optically coupled between them, each of the lasing units having a vertical optical cavity between top and bottom reflectors and being capable of emitting radiation component substantially perpendicular to said plane, said plurality of the unit cells comprising at least a first sub-array of the unit cells located in a first region interfacing with a second region of a different type than said first region, thereby defining an arrangement of optically coupled lasing units of the unit cells along an interface region between the first and second adjacent regions, forming at least one topological state of the unit cells along a topological path within said interface region, wherein the lasing units are associated with two or more lasing modes having two or more different lasing frequencies;

• said at least one topological state being associated with a selected lasing mode being strengthened by optical coupling between the lasing units of the topological path.

A laser source comprising:

• a plurality of lasing units arranged in unit cells placed within a plane and configured to form a topological structure, wherein each of the unit cells includes a plurality of the lasing units optically coupled between them, each of the lasing units having a vertical optical cavity between top and bottom reflectors and being capable of emitting radiation component substantially perpendicular to said plane, said plurality of the unit cells comprising at least a first sub-array of the unit cells located in a first region interfacing with a second region of a different type than said first region, thereby defining an arrangement of optically coupled lasing units of the unit cells along an interface region between the first and second adjacent regions, forming at least one topological state of the unit cells along a topological path within said interface region;
• and
• a phase mask positioned at output path of light emitted from at least some of the lasing units located in the topological path, said phase mask having phase pattern selected to provide a single coherent high intensity output beam.