Fluorescence molecular localization in submicronic depth through waveguide mode coupled emission

Chen, Yikai; Kan, Weiwei; Zhu, Shiqun; Chen, Fulian; Zhang, Lu; Ding, Binxuan; Shen, Zhonghua; Liu, Kunying

doi:10.1016/j.optcom.2020.126290

Cited by 2 publications

(2 citation statements)

References 43 publications

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“…WG-coupling has been used to resolve multiple emission lines of Eu(III) ions, 25 enhance fluorescence signals, 26 monitor in situ growth of metal−organic frameworks, and selectively image emission from either the PCW surface or from the bulk solution. 27,28 However, so far, none of the studies have examined the role of emission dipole orientations on fluorescence coupling with the coexisting orthogonally polarized optical modes in PCW-substrates. The excitation and emission dipole orientations of a molecule are significant for determining its photophysics and interactions with the environment.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In the field of fluorescence, PCW-substrates have been applied to observe coupled emissions in multiple directions as an extension of the SPCE methodology. , Though the earlier studies were not explicitly focused on taking advantage of the dual polarization, increased sharpness, and variable penetration depths of the WG modes, in more recent studies, these outstanding features have been employed for various applications. WG-coupling has been used to resolve multiple emission lines of Eu(III) ions, enhance fluorescence signals, monitor in situ growth of metal–organic frameworks, and selectively image emission from either the PCW surface or from the bulk solution. , However, so far, none of the studies have examined the role of emission dipole orientations on fluorescence coupling with the coexisting orthogonally polarized optical modes in PCW-substrates. The excitation and emission dipole orientations of a molecule are significant for determining its photophysics and interactions with the environment .…”

Section: Introductionmentioning

confidence: 99%

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Orientation Filtering of Fluorescence by Plasmon-Coupled Waveguide

Choudhury

2023

J. Phys. Chem. C

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Plasmon-coupled waveguide (PCW) is an interesting structure that combines plasmons with dielectric waveguides to achieve dual polarization and improved properties of optical modes that are beneficial for fluorescence modulations. This study investigates the effect of emission dipole orientations on the mode-coupled emission from fluorophores doped on a PCW-substrate that is designed to support one S-and one P-polarized waveguide (WG) mode. Differently oriented excited populations of the fluorophore, sulforhodamine 101 (S101), have been generated by the principle of photoselection, using horizontally or vertically polarized excitation light. Further, two different excitation wavelengths have been chosen to access collinear and noncollinear excitation/emission dipoles. Variations in angular fluorescence intensity distribution patterns of the WGcoupled emissions of S101 reveal that coupling of radiated power with the two coexisting orthogonally polarized modes in the PCW-substrate depends critically on the orientation of emission dipoles. The orientation ratio (R), which is defined as a measure of the difference in the intensity ratio between S-and P-polarized coupled emissions for horizontal and vertical excitations, is found to be positive for collinear excitation/emission transition dipoles and negative for noncollinear excitation/emission transition dipoles. The orientation-based filtering of emission by PCW-substrates is not only of interest for display applications and light-emitting devices but can also be useful for deciphering the orientations of molecules doped in the substrates.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Orientation Filtering of Fluorescence by Plasmon-Coupled Waveguide

Choudhury

2023

J. Phys. Chem. C

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Rapid observation of dispersion curves in system-on-chip devices

Wei

Chen

et al. 2023

Review of Scientific Instruments

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We have developed a rapid detection instrument to characterize the behavior of light on the surface of devices during light–matter interactions. The equipment enables the non-destructive and real-time observations of the dispersion curves for microstructures, providing the basis for a large number of new planar photonic chip applications. The method is based on the traditional prismatic reflection and makes full use of the grating dispersion capabilities, enabling simultaneous multi-wavelength and multi-angle reflectance measurements over a wide range. This method is beneficial for designing new microstructure devices and brings convenience to delicate microstructure processing. The instruments do not require any mechanical scanning, allowing for rapid acquisition, and the integrated and reusable optics make them easily miniaturized. Additionally, the functionalized design allows for spectral analysis applications, such as far-field spectral measurements. The instrument can also be easily integrated into established microscopic imaging systems, extending their observational characterization capabilities as well as accomplishing dynamic monitoring in proven system-on-a-chip devices.

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Fluorescence molecular localization in submicronic depth through waveguide mode coupled emission

Cited by 2 publications

References 43 publications

Orientation Filtering of Fluorescence by Plasmon-Coupled Waveguide

Orientation Filtering of Fluorescence by Plasmon-Coupled Waveguide

Rapid observation of dispersion curves in system-on-chip devices

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