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Spectral tuning of photonic band gap (PBG) in photonic crystals is attained due to temperature changes of the refractive index of sodium nitrite infiltrated into the porous silicon template, composed by electrochemical etching of n-type silicon. Optical second harmonic generation measurements prove the ferroelectric state of the infiltrated NaNO2 and reveal the ferroelectric behavior different from...
Magnetization induced third harmonic generation (THG) in magnetic thin, granular films is observed. Magnetic contrast intensity and phase shift in THG allow estimation of odd and even in magnetization components of third-order susceptibility
Summary form only given. In this work we demonstrate that nonlinear-optical method of second-harmonic generation (SHG) with the IR fundamental radiation can be effectively used to determine bacteriorhodopsin (bR) spectral states and suggested as an effective nondestructive read-out for bR-containing optical storage systems.
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