63 citations · 63 across the 2 of their papers we have counts for
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Direct Modulation of Electrically Pumped Coupled Microring Lasers
Chi Xu, William E. Hayenga, Demetrios N. Christodoulides +2
We demonstrate how the presence of gain-loss contrast between two coupled identical resonators can be used as a new degree of freedom to enhance the modulation frequency response o…
Room temperature electrically pumped topological insulator lasers
Jae-Hyuck Choi, William E. Hayenga, Yuzhou G. N. Liu +4
Topological insulator lasers (TILs) are a recently introduced family of lasing arrays in which phase locking is achieved through synthetic gauge fields. These single frequency ligh…
Realizing spin-Hamiltonians in nanoscale active photonic lattices
Midya Parto, William Hayenga, Alireza Marandi +2
Spin models arise in the microscopic description of magnetic materials, where the macroscopic characteristics are governed by exchange interactions among the constituent magnetic m…
Measuring the frequency response of optically pumped metal-clad nanolasers
Chi Xu, William E Hayenga, Mercedeh Khajavikhan +1
We report on our initial attempt to characterize the intrinsic frequency response of metal-clad nanolasers. The probed nanolaser is optically biased and modulated, allowing the emi…
Direct generation of tunable orbital angular momentum beams in microring lasers with broadband exceptional points
William E. Hayenga, Jinhan Ren, Midya Parto +7
Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other. Rece…
Single mode lasing in transversely multi-moded PT-symmetric microring resonators
Hoseein Hodaei, Mohammad-Ali Miri, Absar U. Hassan +4
Single mode lasing is experimentally demonstrated in a transversely multi-moded InP-based semiconductor microring arrangement. In this system, mode discrimination is attained by ju…