5 papers
Chiral Terahertz Amplification and Lasing using Two-Dimensional Materials with Berry Curvature Dipole
Amin Hakimi, J. Sebastian Gomez-Diaz, Filippo Capolino
Compact, electrically driven sources of coherent terahertz (THz) radiation remain a challenge due to the lack of efficient gain media and scalable device platforms. Here, we propos…
Steady-State Exceptional Point Degeneracy and Sensitivity of Nonlinear Saturable Coupled Oscillators
Benjamin Bradshaw, Amin Hakimi, Filippo Capolino
A coupled oscillator system displays enhanced sensitivity of its saturated steady-state (SS) oscillation frequency to small parameter perturbations near an exceptional point degene…
Berry Curvature Dipole-Induced Chiral Terahertz Gain and Lasing Threshold in Bulk Tellurium
Mounes Eslami, Amin Hakimi, Luis A. Jauregui +1
We investigate the use of Berry curvature dipole in -doped Tellurium as a mechanism for achieving terahertz amplification and lasing by applying a DC electric field. When the el…
One-transmitter Multiple-receiver Wireless Power Transfer System Using an Exceptional Point of Degeneracy
Fatemeh Mohseni, Amin Hakimi, Alireza Nikzamir +2
Robust transfer efficiency against the various operating conditions in a wireless power transfer system remains a fundamentally important challenge. This challenge becomes even mor…
Detection of Orbital Angular Momentum Modes via Spiral Phase Plate
Amin Hakimi, S. Faezeh Mousavi, Amir Nader Askarpour
Mode division multiplexing (MDM) systems leveraging spatial modes carrying orbital angular momentum (OAM) present a promising approach to enhance communication capacity in free-spa…