Search academic texts

Information × Registration Number 0216U003993, 0114U002520 , R & D reports Title Design and establishment of multilayer diffraction grating technology for optochemical sensors and their approbation in electronic industry. Step 2: "Sensitivity enhancement of the sensor systems using a defective modes (Tamm plasmon polariton) in the structure of a Fabry-Perot resonator, based on the Bragg multilayer mirrors, waveguide layer and periodically corrugated metal film or a periodic array of metal nanowires" popup.stage_title Head Dmitruk Mykola Leontiyovich, Registration Date 14-03-2016 Organization Institute of Semiconductor Physics of National Academy of Sciences of Ukrain popup.description2 For the first time the possibility of excitation of hybrid plasmon-photon mode at a wavelength of 735 nm has been shown. It is characterized by low level of dissipation due to maximum concentration of the field in the dielectric layer for plasmon-photon system with periodically-profiled metal film like Bragg-flat (N = 3, n1, n2) / Au-sin / GaAs (metal film thickness 30 nm, one-dimensional sinusoidal profile depth of 50 nm and period of 700 nm). Mode quality factor and polarization sensitivity were 144 and 25, respectively, which are almost 3 times more than for a similar structure without Bragg mirror (Au-sin / GaAs), with an increase in slope of sidewall of 1.65 times, which makes it possible to increase the sensitivity of the sensor systems. It is shown that the increase of quality factor is due to the its localization by setting the resonance at the center of the band gap of two-dimensional photonic crystal. Two-dimensional photonic crystal in this case is formed from a one-dimensional photonic crystal based on Bragg mirror by means of planar periodicity of metal film. The sensitivity of the system to change of refractive index of the medium is 215 nm / RIU. Product Description popup.authors Коровін Олександр Вадимович Мамикін Сергій Васильович Соснова Марія popup.nrat_date 2020-04-02 Close