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Narrow-linewidth single-mode vertical-cavity surface-emitting laser

United States Patent

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January 12, 2021
View the Complete Patent at the US Patent & Trademark Office
A coupled-cavity vertical-cavity surface-emitting laser (VCSEL) is disclosed. The coupled-cavity VCSEL includes a passive cavity and an additional distributed Bragg Reflector (DBR) not found in conventional VCSELs, all in a monolithic device. By including these two elements, the photon lifetime may be increased by a factor of approximately ten, leading to a reduction in the laser linewidth by a factor of approximately 100 compared to conventional VCSELs. The two additional elements also serve to ensure single-mode operation of the coupled-cavity VCSEL.
16/ 541,237
August 15, 2019
H01S 5/10 (20060101)H01S 5/183 (20060101)H01S 5/125 (20060101)H01S 5/227 (20060101)
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.