Transfer matrix based reverse engineering approach to analyse annealing induced changes in optical transmission of TiO2/Ag/TiO2/Ag multilayer

Jena, S.; Tokas, R.B.; Misal, J. S.; De, Rajnarayan; Rao, K. Divakar; Thakur, S.; Udupa, D. V.

doi:10.1016/j.optlastec.2021.107392

Cited by 8 publications

(5 citation statements)

References 57 publications

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“…Silver (Ag) was chosen over other metals like gold or aluminum due to its high-quality factor when employed in the Tamm structure. Additionally, the advantage lies in the minimum absorption coefficient and the lack of interband transitions within the visible spectrum, eliminating the potential for optical losses in this range. , The dependence of the Tamm cavity mode on different Ag layer thicknesses is shown in Figure a. The metal layer thickness plays an important role in determining the amplitude and width of the transmittance mode.…”

Section: Resultsmentioning

confidence: 99%

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications

Satheesan,

Puthiya Purayil,

Singh

et al. 2024

ACS Appl. Nano Mater.

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Metal nanoclusters, created with atomic precision, are an exceptional class of ultrasmall molecule-like functional materials with wide applications in nonlinear nanophotonics. These ultrasmall clusters exhibit intriguing quantum size effects, leading to discrete energy levels and size-dependent optical and electronic properties. The effective integration of nanoclusters in photonic structures can improve their nonlinear optical properties by promoting a stronger light−matter interaction. In this paper, we demonstrate Tamm cavity-induced nonlinear optical characteristics of ligand-protected platinum-17 metal nanoclusters. The spectral tunability of the Tamm resonance mode is explored by controlling parameters, such as the number of bilayers, spacer layer thickness, and metal characteristics. The nanosecond nonlinear optical studies demonstrate excellent nonlinear absorption properties, attributed to the coupling of Tamm plasmons with the nanoclusters. Notably, a switching behavior in the intensity-dependent absorption coefficient is observed at resonant and offresonant excitations, suggesting potential applications in optical switching and tunable nonlinear filters.

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Section: Resultsmentioning

confidence: 99%

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications

Satheesan,

Puthiya Purayil,

Singh

et al. 2024

ACS Appl. Nano Mater.

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“…We consider a multilayer structure consists of m layers, and it is incident normally by a beam of light. Based on the TMM, we introduce S matrix of the system, which is the multiplication of the refraction matrix W of each interface and the phase matrix U of the films 10,11,12 . The refraction matrix is given by:…”

Section: Reflectance Model Of Multilayer Structurementioning

confidence: 99%

High-precision air gap thickness measurement based on spectral reflectometry

Liu,

Gong,

Zhao

et al. 2024

2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024)

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Spectral reflectometry is widely used to measure the crucial parameters such as thickness and refractive index of film, surface morphology and grating constant in a convenient way. In this work, we focus on the measurement of air gap between two parallel plates. The transfer matrix method (TMM) and rigorous coupled-wave analysis (RCWA) are independently used to build the theoretical model of the air gap with micro and nano scale between two parallel plates, and then we compare the results. Through the simulation of reflectance spectrum based on optimized TMM. The influence of interfacial roughness of multilayer structure is analyzed. Then we introduce a merit function which includes air gap and interfacial roughness and then optimize them using genetic algorithm to solve the measured air gap value. The absolute measurement of air gap thickness and subsequent displacement measurement result indicate that our method has the advantage of high precision, resolution and stability.

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“…Silver is advantageous over gold, aluminum, and other metals for Tamm plasmon structures due to its high-quality factor, minimal absorption coe cient, and the absence of interband transitions within the visible spectrum, resulting in reduced optical losses in this range 40 . Schematic of the TPC structure is given in Fig.…”

Section: Fabrication Of the Photonic Structuresmentioning

confidence: 99%

Impact of Tamm Plasmon Structures on Fluorescence and Optical Nonlinearity of Graphene Quantum Dots

Elamkulavan,

Purayil,

Subramaniam

et al. 2024

Preprint

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Graphene Quantum Dots (GQDs) are crucial in biomedicine for sensitive biosensing and high-resolution bioimaging, and in photonics for their nonlinear optical properties. Integrating GQDs with photonic structures, enhances optical properties, optimizing light-matter interactions and enabling precise control over resonance wavelengths. Tamm Plasmon Cavity (TPC) structures are pivotal in photonics, offering innovative solutions to traditional plasmonic limitations. In this work, we explore a facile synthesis method of GQDs by laser irradiation and highlight the transformative potential of TPC structures in amplifying the properties of nanomaterials like GQDs. The characterization of GQDs reveals their exceptional properties, including efficient optical limiting, and stable photoluminescence. The study demonstrates that the TPC structure significantly amplifies the nonlinear optical effects due to the high light-matter interaction indicating the potential for advanced optical systems, including optical limiters and nonlinear optical devices. Furthermore, introducing GQDs into the TPC structure leads to a significant enhancement and tuning of fluorescence emission. The Purcell effect, in combination with the confined electromagnetic fields within the TPC, increases the spontaneous emission rate of GQDs and subsequently enhances fluorescence intensity. This enhanced and tunable fluorescence has exciting implications for high-sensitivity applications like biosensing and single-molecule detection.

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Transfer matrix based reverse engineering approach to analyse annealing induced changes in optical transmission of TiO2/Ag/TiO2/Ag multilayer

Cited by 8 publications

References 57 publications

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications

High-precision air gap thickness measurement based on spectral reflectometry

Impact of Tamm Plasmon Structures on Fluorescence and Optical Nonlinearity of Graphene Quantum Dots

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Transfer matrix based reverse engineering approach to analyse annealing induced changes in optical transmission of TiO2/Ag/TiO2/Ag multilayer

Cited by 8 publications

References 57 publications

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt17 Nanoclusters for Nonlinear Photonic Applications

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt17 Nanoclusters for Nonlinear Photonic Applications

High-precision air gap thickness measurement based on spectral reflectometry

Impact of Tamm Plasmon Structures on Fluorescence and Optical Nonlinearity of Graphene Quantum Dots

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Product

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Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications

Tamm Plasmon-Mediated Tunable Absorption Switching in Atomically Precise Pt₁₇ Nanoclusters for Nonlinear Photonic Applications