Tunable ferroelectric photonic crystals based on porous silicon templates infiltrated by sodium nitrite
TV Murzina, FY Sychev, IA Kolmychek… - Applied physics …, 2007 - pubs.aip.org
Ferroelectric photonic band-gap (PBG) structures are fabricated by the infiltration of sodium
nitrite into the nanoporous silicon templates composed by the electrochemical etching of n-
type silicon. Reversible spectral tuning of the PBG and of the microcavity mode up to 15 nm
is attained in the temperature interval from 50 to 165 C due to the temperature changes of
the refractive index of sodium nitrite in nanoporous silicon matrix. Optical second-harmonic
generation measurements prove the ferroelectric state of the composed nanocomposite …
nitrite into the nanoporous silicon templates composed by the electrochemical etching of n-
type silicon. Reversible spectral tuning of the PBG and of the microcavity mode up to 15 nm
is attained in the temperature interval from 50 to 165 C due to the temperature changes of
the refractive index of sodium nitrite in nanoporous silicon matrix. Optical second-harmonic
generation measurements prove the ferroelectric state of the composed nanocomposite …
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