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Updated: Jun 17, 2026
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Efficient generation of high-frequency terahertz waves from highly lossy second-order nonlinear medium at polariton
1Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, USA. yud2@lehigh.edu
Abstract:
Owing to strong coupling between transverse-optical phonons and high-frequency terahertz waves in zinc-blende semiconductors, second-order nonlinear coefficients can be dramatically enhanced within the forbidden band of the polariton resonance. However, linear absorption in this regime is also dramatically increased. We show that transverse-pumping geometry can be exploited for achieving an efficient terahertz generation at the polariton resonance. Our estimates illustrate that pump powers as low as 100 mW are sufficient for causing the significant depletion of the pump beams.
