Ultradispersive prisms and narrow-band tunable filters combining dispersion of atomic resonances and photonic band-gap structures
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It is shown that the combination of resonance-enhanced dispersion of an atomic or molecular gas with the dispersion of a photonic band-gap (PBG) structure gives rise to new features in the dispersion and transmission of a hybrid resonant gas/PBG system, including the appearance of narrow passbands in the band gap and stop bands outside the band gap, as well as the enhancement of the dispersion of the structure within a narrow spectral range. The possibility of creating narrow-passband and narrow-stopband filters and ultrarefractive prisms combining the dispersion properties of resonant gases and PBG structures is demonstrated. Transmissive and dispersive properties of gas-rilled PBG structures can be controlled by varying the gas pressure and by tuning the band gap with respect to the frequency of an atomic or molecular resonance in a gas. Gas-filled two-dimensional PBG structures can be used for numerous high-resolution and high-precision spectroscopic applications, as well as for spectrally resolved Raman imaging of gas flows and plasmas.
author list (cited authors)
Naumov, A. N., Miles, R. B., Barker, P., & Zheltikov, A. M.
complete list of authors
Naumov, AN||Miles, RB||Barker, P||Zheltikov, AM