System and method for optical feedback stabilized semiconductor frequency combs
AssigneeThe Trustees of Princeton University
InventorsChu C. Teng, Jonas Westberg, Gerard Wysocki
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Abstract
According to various embodiments, a system for stabilizing operation of semiconductor laser frequency combs via optical feedback is disclosed. The system includes an external cavity having a beam-splitter, polarizer, and mirror or partially reflective element mounted on a translational stage. The external cavity and a laser facet of the semiconductor laser form an external optical resonator for coupling light to a laser cavity.
Claims14
A system for stabilizing operation of semiconductor laser frequency combs, comprising:
- a semiconductor laser frequency comb chip with two laser facets forming a laser chip cavity;
- an external cavity having a beam-splitter, polarizer, and mirror, where the mirror is mounted on a translational stage that can adjust external cavity length;
- wherein a free spectral range of the laser chip cavity is an integer multiple of a free spectral range of the external cavity;
- wherein from at least one of the laser facets (a “front laser facet”), broadband comb radiation is emitted;
- wherein the external cavity and the front laser facet form an external optical resonator for coupling to the laser chip cavity;
- and
- wherein the external cavity reflects a range of optical frequencies emitted from the front laser facet.
A system for stabilizing operation of semiconductor laser frequency combs, comprising:
- a semiconductor laser frequency comb chip with two laser facets forming a laser chip cavity;
- an external cavity having at least one partially reflective surface mounted on a translational stage that can adjust external cavity length;
- wherein a free spectral range of the laser chip cavity is an integer multiple of a free spectral range of the external cavity;
- wherein from the external cavity and at least one of the laser facets (a “front laser facet”) emits frequency comb radiation;
- wherein the external cavity and the front laser facet form an external optical resonator for coupling to a laser chip cavity;
- and
- wherein the external cavity reflects a range of optical frequencies emitted from the front laser facet.
Dependencies are inferred from the claim text.