2008/05/28 by Pedro Chamorro‐Posada, P. Chamorro-Posada, Chamorro-Posada, P. +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #General Physics (physics.gen-ph) #Optics (physics.optics) #Photonic and Optical Devices #Quantum optics and atomic interactions #Terahertz technology and applications #physics.gen-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.0805.4240
openalex publication_date 2008/05/28 · arxiv created 2008/05/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We analyse the superluminal propagation of narrow-band pulses at resonances in dissipative media. The output waveform is an attenuated, undistorted, time-advanced version of the input which can be interpreted as the result of the interference of two scaled replicas of the input having a positive relative delay. The proposed analysis applies both to the propagation in a passive bulk medium at an electronic resonance and in a dielectric waveguide coupled to a lossy micro-ring resonator. This latter case provides a clear insight of the underlying physical phenomena.