Design of a narrowband retroreflector based on guided-mode resonance

Inoue, Jun‐ichi; Kusuura, Toshiki; Akamatsu, Keita; Ura, Shogo

doi:10.1364/josaa.385559

Cited by 6 publications

(5 citation statements)

References 28 publications

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“…Reflectance spectra of designed F-CRIGFs were calculated using a model developed by ourselves [41]. Focusing reflectance R f and specular reflectance R s of F-CRIGF are given by…”

Section: B Theoretically Predicted Characteristicsmentioning

confidence: 99%

Integrated Photonic Device for Wavelength-Stable Laser Oscillation and Simultaneous Input Coupling

et al. 2023

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A guided-mode-resonance device for both narrowband retroreflection and waveguide input coupling was designed and fabricated for operation wavelength of 1550 nm. It consists of a focusing grating coupler (FGC) integrated in a waveguide cavity resonator constructed by a pair of distributed Bragg reflectors (DBRs) on a reflection substrate. The size of the FGC was 31 × 20 µm 2 . The device was used as a laser mirror of an external cavity laser. The oscillation wavelength was fixed to the retroreflection wavelength, and the laser power was coupled to a waveguide. The coupled power depends on the length of one DBR.The optimal length for the maximum coupling was also discussed theoretically and experimentally.

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“…Reflectance spectra of designed F-CRIGFs were calculated using a model developed by ourselves [41]. Focusing reflectance R f and specular reflectance R s of F-CRIGF are given by…”

Section: B Theoretically Predicted Characteristicsmentioning

confidence: 99%

Integrated Photonic Device for Wavelength-Stable Laser Oscillation and Simultaneous Input Coupling

et al. 2023

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“…Today, it clear that the lattice-mode resonances are responsible for many remarkable phenomena explained earlier from different points of view. Among them, besides those mentioned in the introduction, there are the 'large phased-array scan blindness effect' [39][40][41], 'anomalous antenna Q-factors' [42], and 'guided-mode resonance' [43].…”

Section: Lattice Modes Of Periodic Open Resonatormentioning

confidence: 99%

Electromagnetic characterization of tuneable graphene‐strips‐on‐substrate metasurface over entire THz range: Analytical regularization and natural‐mode resonance interplay

Yevtushenko¹,

Dukhopelnykov

Zinenko³

et al. 2021

IET Microwaves Antenna & Prop

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Scattering and absorption of the H-polarized plane wave by the infinite grating of flat graphene strips are considered in the environment met most frequently-on or at the surface of a dielectric-slab substrate. The full-wave meshless code is based on the analytical semi-inversion using the Riemann-Hilbert problem solution. This leads to a Fredholm second-kind matrix equation for the Floquet harmonic amplitudes that guarantees code convergence and provides easy control of computational error, which can be reduced to machine precision. The matrix elements are combinations of elementary functions, and therefore, the code is accurate and quite economical. This enables computation of the reflectance, transmittance, and absorbance as a function of the frequency in the wide band from static case to 10 THz. Numerical results show that such a metasurface with micrometre-sized strips is a composite periodic open resonator. It is highly frequency-selective thanks to the interplay of three types of natural modes-low-Q slab, moderate-Q plasmon strip, and ultrahigh-Q lattice-that do not exist in the absence of the substrate. Varying the chemical potential of graphene, one can manipulate the electromagnetic characteristics of the metasurface at a fixed frequency from almost total transmission to almost total reflection.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…This coupling behavior is the same as discussed in a previous report. 14) The structure and coupling behavior in the negative-z segment of the FGC is symmetric to the case of the positive-z segment with respect to the xy-plane.…”

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confidence: 94%

“…A smaller number of components will simplify alignment process. We have recently proposed and demonstrated a GMR retroreflector for an obliquely incident plane wave, 14,15) but it does not support a diverging wave. Theoretical investigation for a focusing retroreflection with a concave surface was reported 16) though it needs machining of the concave structure.…”

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confidence: 99%

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Narrowband focusing retroreflector with a thin-film structure

Inoue

Kusuura

Ueda

et al. 2021

Appl. Phys. Express

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A thin-film narrowband retroreflector is proposed for a diverging free-space wave. The retroreflector consists of a focusing grating coupler in a waveguide resonator on a reflective substrate. The retroreflector is designed and fabricated for an incident wave diverging from a 5.25 μm diameter spot. The retroreflector gives a reflection towards the divergence point of the incident wave at the resonance wavelength determined by the waveguide resonator, but otherwise a specular reflection. The retroreflection spectrum of a 4 nm bandwidth with the peak of 75% is demonstrated. This configuration will provide a lens-less external-cavity-mirror diode laser of a lasing wavelength fixed to the resonance wavelength.

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Design of a narrowband retroreflector based on guided-mode resonance

Cited by 6 publications

References 28 publications

Integrated Photonic Device for Wavelength-Stable Laser Oscillation and Simultaneous Input Coupling

Integrated Photonic Device for Wavelength-Stable Laser Oscillation and Simultaneous Input Coupling

Electromagnetic characterization of tuneable graphene‐strips‐on‐substrate metasurface over entire THz range: Analytical regularization and natural‐mode resonance interplay

Narrowband focusing retroreflector with a thin-film structure

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