Enhancing the light-matter interaction using slow light: towards the concept of dense light

Thévenaz, Luc; Dicaire, Isabelle; Chin, Sang Hoon

doi:10.1117/12.914752

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…A Tamm plasmon can be S- or P-polarized and the in-plane wavevector can be zero. This absence of in-plane propagation offers the opportunities for “slow light” which can increase the interactions with fluorophores [64-65]. Tamm plasmons do have a disadvantage, which is that the modes are under the metal film (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Radiative decay engineering 7: Tamm state-coupled emission using a hybrid plasmonic–photonic structure

Badugu

Descrovi

Lakowicz

2014

Analytical Biochemistry

106

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There is a continuing need to increase the brightness and photostability of fluorophores for use in biotechnology, medical diagnostics and cell imaging. One approach developed during the past decade is to use metallic surfaces and nanostructures. It is now known that excited state fluorophores display interactions with surface plasmons, which can increase the radiative decay rates, modify the spatial distribution of emission and result in directional emission. One important example is Surface Plasmon-Coupled Emission (SPCE). In this phenomenon the fluorophores at close distances from a thin metal film, typically silver, display emission over a small range of angles into the substrate. A disadvantage of SPCE is that the emission occur at large angles relative to the surface normal, and at angles which are larger than the critical angle for the glass substrate. The large angles make it difficult to collect all the coupled emission and have prevented use of SPCE with high-throughput and/or array applications. In the present report we describe a simple multi-layer metal-dielectric structure which allows excitation with light that is perpendicular (normal) to the plane and provides emission within a narrow angular distribution that is normal to the plane. This structure consist of a thin silver film on top of a multi-layer dielectric Bragg grating, with no nanoscale features except for the metal or dielectric layer thicknesses. Our structure is designed to support optical Tamm states, which are trapped electromagnetic modes between the metal film and the underlying Bragg grating. We used simulations with the transfer matrix method to understand the optical properties of Tamm states and localization of the modes or electric fields in the structure. Tamm states can exist with zero in-plane wavevector components and can be created without the use of a coupling prism. We show that fluorophores on top of the metal film can interact with the Tamm state under the metal film and display Tamm state-coupled emission (TSCE). In contrast to SPCE, the Tamm states can display either S- or P-polarization. The TSCE angle is highly sensitive to wavelength which suggests the use of Tamm structures to provide both directional emission and wavelength dispersion. Metallic structures can modify fluorophore decay rates but also have high losses. Photonic crystals have low losses, but may lack the enhanced light-induced fields near metals. The combination of plasmonic and photonic structures offers the opportunity for radiative decay engineering to design new formats for clinical testing and other fluorescence-based applications.

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Section: Introductionmentioning

confidence: 99%

Radiative decay engineering 7: Tamm state-coupled emission using a hybrid plasmonic–photonic structure

Badugu

Descrovi

Lakowicz

2014

Analytical Biochemistry

106

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“…Due to the periodic nature of the PhC waveguide's dielectric material, the dispersion relation exhibits non-linear behaviour near the photonic band edge (PBE). Through careful selection of design parameters [14], PhCRR's can be engineered to possess resonances exhibiting slow-light characteristics such as enhanced light-matter interactions [15] and improved microcavity lifetimes [16]. The strong dispersion of a ring's photonic crystal lattice can also be used to further refine control over existing dispersionengineering techniques.…”

Section: Introductionmentioning

confidence: 99%

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

McGarvey-Lechable¹,

Hamidfar²,

Patel³

et al. 2017

Opt. Express

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We present experimental results of photonic crystal ring resonators (PhCRRs) fabricated on the CMOS-compatible, silicon-on-insulator platform via 193-nm deep-UV lithography. Our dispersion-engineering design approach is compared to experimental results, showing very good agreement between theory and measurements. Specifically, we report a mean photonic band-edge wavelength of 1546.2 ± 5.8 nm, a 0.2% variation from our targeted band-edge wavelength of 1550 nm. Methods for the direct calculation of the experimental, discrete dispersion relation and extraction of intrinsic quality factors for a highly-dispersive resonator are discussed. A maximum intrinsic quality factor of ≈83,800 is reported, substantiating our design method and indicating that high-throughput optical lithography is a viable candidate for PhCRR fabrication. Finally, through comparison of the mean intrinsic quality and slowdown factors of the PhCRRs and standard ring resonators, we present evidence of an increase in light-matter interaction strength with simultaneous preservation of microcavity lifetimes.

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Multi-component gas sensing based on slotted photonic crystal waveguide with liquid infiltration

Zhang

Zhao

Wang

2013

Sensors and Actuators B: Chemical

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Enhancing the light-matter interaction using slow light: towards the concept of dense light

Cited by 8 publications

References 20 publications

Radiative decay engineering 7: Tamm state-coupled emission using a hybrid plasmonic–photonic structure

Radiative decay engineering 7: Tamm state-coupled emission using a hybrid plasmonic–photonic structure

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

Multi-component gas sensing based on slotted photonic crystal waveguide with liquid infiltration

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