Počet záznamů: 1
One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications
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SYSNO ASEP 0560663 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications Tvůrce(i) Fořt, Tomáš (UPT-D) RID, ORCID, SAI
Kaňok, R. (CZ)
Hlubina, P. (CZ)
Pokorný, Pavel (UPT-D) RID, SAI, ORCID
Sobota, Jaroslav (UPT-D) RID, ORCID, SAICelkový počet autorů 5 Číslo článku 561 Zdroj.dok. Photonics. - : MDPI
Roč. 9, č. 8 (2022)Poč.str. 13 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova photonic crystal ; Bloch surface wave ; termination layer ; reflectance ; phase shift ; Kretschmann configuration Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) Způsob publikování Open access Institucionální podpora UPT-D - RVO:68081731 UT WOS 000845924200001 EID SCOPUS 85137360528 DOI 10.3390/photonics9080561 Anotace We demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO2/SiO2 bilayers with a termination layer of TiO2. For the gaseous analytes, we show that 1DPhC can support the GW excited by an s-polarized wave and the theoretical shift of the resonance wavelength is linear for small changes in the analyte refractive index (RI), giving a constant RI sensitivity of 87 nm per RI unit (RIU). In addition, for the aqueous analytes, the GW excited by s-polarized and BSW by p-polarized waves can be resolved and exploited for sensing applications. We compare two designed and realized 1DPhCs with termination layer thicknesses of 60 nm and 50 nm, respectively, and show experimentally the differences in their very narrow reflectance and phase responses. An RI sensitivity and figure of merit as high as 544.3 nm/RIU and 303 RIU-1, respectively, are obtained for the smaller thickness when both s- and p-polarized BSWs are excited. This is the first demonstration of both very deep BSW-based resonances in two orthogonal polarizations and a very narrow resonance in one of them. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2023 Elektronická adresa https://www.mdpi.com/2304-6732/9/8/561
Počet záznamů: 1