Multilayer dielectric coated Fabry Perot spectral beam combiner for high power, narrowband, widely tunable laser applications

Rana, Paramjit; Mukherjee, C.; Mishra, Satish; Kamparath, Rajiv; Sahoo, Subhashree; Mukherjee, Jaya; Rawat, V.S.

doi:10.1016/j.optlastec.2020.106210

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…These structures supporting multi resonance mode like SPR and (i) Surface Enhanced Raman Scattering (SERS) [7], (ii) Guided Mode Resonance (GMR) [8], (iii) Fabry-Perot (FP) [9] resonances have been investigated previously. Among these resonances, FP-like resonance is very popular due to its narrowband application [10]. In FP nano-plasmonic cavities, the photon is trapped between two parallel mirrors constituting standing waves and selective wavelengths create resonance depending on the length of the cavity [11].…”

Section: Introductionmentioning

confidence: 99%

T-grating on a nano-cavity array based refractive index sensor

2021

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We report a refractive index sensor comprising of unique T grating on top of periodic nano-cavities. The sensor has two resonant modes sensitive to different regions of the structure with low inter-region interference, hence allows simultaneous detection of two different analytes or more accurate detection of a single analyte. The sensor also provides a self-referencing feature for a broad range of refractive index, from 1.3 to 1.5. Using the FDTD method, the sensitivities of 801.7 nm RIU -1 and 1386.8 nm RIU -1 have been recorded for the two modes respectively. The versatility of the structure makes the sensor a prominent candidate for biochemical and other sensing applications.

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