From Bloch surface waves to cavity-mode resonances reaching an ultrahigh sensitivity and a figure of merit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F23%3A10253277" target="_blank" >RIV/61989100:27240/23:10253277 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/ol/fulltext.cfm?uri=ol-48-22-6068&id=542406" target="_blank" >https://opg.optica.org/ol/fulltext.cfm?uri=ol-48-22-6068&id=542406</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OL.509681" target="_blank" >10.1364/OL.509681</a>
Alternative languages
Result language
angličtina
Original language name
From Bloch surface waves to cavity-mode resonances reaching an ultrahigh sensitivity and a figure of merit
Original language description
We report on a new sensing concept based on resonances supported by a one-dimensional photonic crystal (1DPhC) microcavity resonator in the Kretschmann configuration. For a 1DPhC comprising six bilayers of TiO2/SiO2 with a termination layer of TiO2 employed to form a microcavity, we show that when the angle of incidence is changed, the Bloch surface waves (BSWs) can be transformed into cavity-mode resonances exhibiting an ultrahigh sensitivity and a figure of merit. Using wavelength interrogation, we demonstrate that Bloch surface TE wave excitation shows up as a sharp dip in the reflectance spectrum with a sensitivity and a figure of merit (FOM) of 70 nm per refractive index unit (RIU) and 19.5 RIU-1, respectively. When the angle of incidence decreases, cavity-mode resonances for both TE and TM waves are resolved for RI in a range of 1.0001-1.0005. The sensitivity and FOM can reach 52,300 nm/RIU and 402,300 RIU-1 for the TE wave, and 14,000 nm/RIU and 2154 RIU-1 for the TM wave, respectively. In addition, resonances are confirmed experimentally for a humid air with a sensitivity of 0.073 nm per percent of the relative humidity (%RH) for BSW resonance and is enhanced to 1.367 nm/%RH for the TM cavity-mode resonance. This research, to the best of the authors' knowledge, is the first demonstration of a new BSW-like response that can be utilized in a simple sensing of a wide range of gaseous analytes.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Optics Letters
ISSN
0146-9592
e-ISSN
1539-4794
Volume of the periodical
48
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
6068-6071
UT code for WoS article
001116556900002
EID of the result in the Scopus database
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