Optical Pulses in a Non-Hermitian Medium near a Singularityстатья
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Дата последнего поиска статьи во внешних источниках: 8 октября 2025 г.
Аннотация:The spectral method was used to solve the problem of interaction of short optical pulses with PT-symmetric photonic crystals under conditions of frequency singularity. It was shown that, at a small deviationfrom the exceptional point of spontaneous decay of PT-symmetric field modes, frequency singularitiesof the transmission and reflection coefficients of the structure arise. This leads to a significant narrowing of the pulse spectra and an increase in their amplitude and duration with unidirectional Bragg reflection.