Abstract
Lossy mode resonance (LMR) sensors not only support transverse magnetic mode (TM) but also respond to transverse electric (TE) polarization, which has the advantage over traditional surface plasmon resonance sensing supporting only a single TM polarization. We theoretically propose an LMR sensor that can detect the refractive index (RI) changes based on the Kretschmann configuration with PtSe2 material. The refractive index parameter of PtSe2 film is fitted through experimental measurements, and the performance of LMR sensor with PtSe2 is theoretically calculated. The figure of merit (FOM) of the sensor performance has been significantly improved, and the maximum FOM with 626 RIU−1 has been acquired.
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