Centimeter‐Scale Propagation of Optical Surface Waves at Visible Wavelengths

Lahijani, Babak Vosoughi; Descharmes, Nicolas; Barbey, Raphaël; Osowiecki, Gaël David; Wittwer, Valentin J.; Razskazovskaya, Olga; Südmeyer, Thomas; Herzig, Hans Peter

doi:10.1002/adom.202102854

Cited by 14 publications

(6 citation statements)

References 44 publications

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“…The type and thickness of 1D PhC defect layer materials are two of the most crucial criteria for sensing in BSW 25 . The angle of excitation at which the BSW is created depends on DBR’s layers or the number of bilayers 26 , 27 . The 1D-PhC structure operates the same way a dielectric mirror would, reflecting most of the light that strikes it.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

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Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Sagar

Kumar

2023

J. Nanophoton.

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To generate resonance in the ultraviolet (UV) wavelength region, we have developed a Bragg mirror structure with a SiO 2 top layer. This paper shows the wavelength at which sensitivity occurs by modifying the architecture of the one-dimensional photonic crystal (1D-PhC) structure appropriately. The structural parameters are adjusted to excite a Bloch surface wave with a wavelength of 256 and 281 nm at the top interface, which are the operational wavelengths. The spectrum's distribution of electric fields and mode confinement confirmed the suggested structure with an 8-nm thick defect layer. The proposed design is empathetic at UV wavelength with varying analyte's refractive index value. The investigation shows that the sensitivity is about 107.42 and 101.85 deg/RIU, and the quality factor is 1426.17 and 1708.14 nm at UV wavelengths of 281 and 256 nm, respectively.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

“…25 The angle of excitation at which the BSW is created depends on DBR's layers or the number of bilayers. 26,27 The 1D-PhC structure operates the same way a dielectric mirror would, reflecting most of the light that strikes it. Therefore, there is no BSW mode seen in this particular instance.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Sagar

Kumar

2023

J. Nanophoton.

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“…Besides the advantages of tuning the BSWs’ spectral position, polarization [ 44 ], as well as propagation and penetration lengths [ 45 ], one of the most intriguing features offered by 1DPC-based platforms is the possibility to exploit the 1DPC surface to set up an accessible framework for controlling light–matter interaction. Furthermore, shallow patterning of the 1DPC surface allows the BSW to be manipulated and possibly confined along transverse directions [ 40 , 46 ], thus providing new degrees of freedom for exploring complex phenomena.…”

Section: Introductionmentioning

confidence: 99%

Bloch Surface Waves in Open Fabry–Perot Microcavities

et al. 2023

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Thanks to the increasing availability of technologies for thin film deposition, all-dielectric structures are becoming more and more attractive for integrated photonics. As light–matter interactions are involved, Bloch Surface Waves (BSWs) may represent a viable alternative to plasmonic platforms, allowing easy wavelength and polarization manipulation and reduced absorption losses. However, plasmon-based devices operating at an optical and near-infrared frequency have been demonstrated to reach extraordinary field confinement capabilities, with localized mode volumes of down to a few nanometers. Although such levels of energy localization are substantially unattainable with dielectrics, it is possible to operate subwavelength field confinement by employing high-refractive index materials with proper patterning such as, e.g., photonic crystals and metasurfaces. Here, we propose a computational study on the transverse localization of BSWs by means of quasi-flat Fabry–Perot microcavities, which have the advantage of being fully exposed toward the outer environment. These structures are constituted by defected periodic corrugations of a dielectric multilayer top surface. The dispersion and spatial distribution of BSWs’ cavity mode are presented. In addition, the hybridization of BSWs with an A exciton in a 2D flake of tungsten disulfide (WS2) is also addressed. We show evidence of strong coupling involving not only propagating BSWs but also localized BSWs, namely, band-edge and cavity modes.

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“…For example, BSWs are sustained by a multilayer made of pure dielectric materials; they do not suffer from losses caused by metal absorption. Thus, BSWs can propagate very long distances (propagation length of centimeter range was obtained at visible wavelengths) 10 and achieve narrow mode resonances 9 . On the other hand, the dielectric multilayer can be prepared from different materials, allowing for BSWs generation covering a wide range of wavelengths from the deep ultraviolet (UV) 11 to mid-infrared (MIR) regions 12 , 13 .…”

Section: Introductionmentioning

confidence: 99%

High-Q lasing via all-dielectric Bloch-surface-wave platform

Lee,

Ho,

Lin

et al. 2023

Nat Commun

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Controlling the propagation and emission of light via Bloch surface waves (BSWs) has held promise in the field of on-chip nanophotonics. BSW-based optical devices are being widely investigated to develop on-chip integration systems. However, a coherent light source that is based on the stimulated emission of a BSW mode has yet to be developed. Here, we demonstrate lasers based on a guided BSW mode sustained by a gain-medium guiding structure microfabricated on the top of a BSW platform. A long-range propagation length of the BSW mode and a high-quality lasing emission of the BSW mode are achieved. The BSW lasers possess a lasing threshold of 6.7 μJ/mm2 and a very narrow linewidth reaching a full width at half maximum as small as 0.019 nm. Moreover, the proposed lasing scheme exhibits high sensitivity to environmental changes suggesting the applicability of the proposed BSW lasers in ultra-sensitive devices.

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Centimeter‐Scale Propagation of Optical Surface Waves at Visible Wavelengths

Cited by 14 publications

References 44 publications

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Assessment of Bloch surface wave-based one-dimensional photonic crystal sensor using ultraviolet range

Bloch Surface Waves in Open Fabry–Perot Microcavities

High-Q lasing via all-dielectric Bloch-surface-wave platform

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