Toward Highly Reliable, Precise, and Reproducible Fabrication of Photonic Crystal Slabs on Lithium Niobate

Calero, Venancio; Suarez, Miguel-Angel; Salut, Roland; Robert, Bruno; Caspar, Alexis; Baida, Fadi; Courjal, Nadège; Bernal, Maria–Pilar

doi:10.1109/jlt.2018.2868051

Cited by 7 publications

(7 citation statements)

References 32 publications

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“…2(e) and the resonant wavelength is located at 1576 nm. The resonance presents an average spectral slope of 4.96 dB / nm , showing better spectral performances than the 2SBM 39 , as it is a lower frequency mode in addition to be the highest ever reported on LN-PCS 40,47–49 .…”

Section: Fabrication and Optical Characterizationmentioning

confidence: 88%

“…an optical fiber tip. The fabrication of the LN-based PCS is optimized and assessed in a recent paper 39 . However, concerning the integration onto the fiber tip, the fiber may alter the SBMs.…”

Section: Design and Simulationsmentioning

confidence: 99%

“…The Fano resonance wavelength error was of 18 nm at most in the membrane and of 40 nm once integrated onto the fiber. The fabrication procedure of the free-standing LN membrane and the PCS within is beyond the scope of this paper, but investigated in a previous work 39 . The integration of the PCS on the fiber facet is performed by the point welding method reported by Solgaard group 46 .…”

Section: Fabrication and Optical Characterizationmentioning

confidence: 99%

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An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

Calero

Suárez

Salut

et al. 2019

Sci Rep

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Non-intrusive, wide bandwidth and spatial resolution are terms often heard in electric field sensing. Despite of the fact that conventional electromagnetic field probes (EMF) can exhibit notable functional performances, they fail in terms of perturbation of the E-field due to their loaded metallic structure. In addition, even though electro-optical technology offers an alternative, it requires large interaction lenghts which severely limit the sensing performances in terms of bandwidth and spatial resolution. Here, we focus on miniaturizing the interaction volume, photon lifetime and device footprint by taking advantage of the combination of lithium niobate (LN), Lab-on-Fiber technologies and photonic crystals (PhC). We demonstrate the operation of an all-dielectric E-field sensor whose ultra-compact footprint is inscribed in a 125 μm-diameter circle with an interaction area smaller than 19 μm × 19 μm and light propagation length of 700 nm. This submicrometer length provides outstanding bandwidth flatness, in addition to be promising for frequency detection beyond the THz. Moreover, the minituarization also provides unique features such as spatial resolution under 10 μm and minimal perturbation to the E-field, accompanied by great linearity with respect to the E-field strength. All these specifications, summarized to the high versatibility of Lab-on-Fiber technology, lead to a revolutionary and novel fibered E-field sensor which can be adapted to a broad range of applications in the fields of telecommunications, health and military.

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Section: Fabrication and Optical Characterizationmentioning

confidence: 88%

Section: Design and Simulationsmentioning

confidence: 99%

Section: Fabrication and Optical Characterizationmentioning

confidence: 99%

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An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

Calero

Suárez

Salut

et al. 2019

Sci Rep

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“…Calero et al proposed the redeposition-free FIB etching technique [41] . They noted that the fabrication imperfections during the FIB process are owing to the large hole conicity, thickness erosion, and surface roughness.…”

Section: Fabrication and Characterization Of The Lnphcmentioning

confidence: 99%

Recent progress in thin-film lithium niobate photonic crystal [Invited]

Ge,

Wu,

Liu

et al. 2024

中国光学快报

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Lithium niobate is a material that exhibits outstanding electro-optic, nonlinear optical, acousto-optic, piezoelectric, photorefractive, and pyroelectric properties. A thin-film lithium niobate photonic crystal can confine light in the sub-wavelength scale, which is beneficial to the integration of the lithium niobate on-chip device. The commercialization of the lithium niobate on insulator gives birth to the emergence of high-quality lithium niobate photonic crystals. In order to provide guidance to the research of lithium niobate photonic crystal devices, recent progress about fabrication, characterization, and applications of the thin-film lithium niobate photonic crystal is reviewed. The performance parameters of the different devices are compared.

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“…In this paper, we experimentally demonstrate an LN membrane metasurface showing a strong SHG conversion efficiency up to 2.0 × 10 –4 , which is, to the best of our knowledge, the largest value among all the reported metasurface arrays in the visible and near-infrared range. , Here we manufactured a 210 nm thick freestanding LN membrane using an LNOI wafer, based on which we fabricated the metasurfaces consisting of a square lattice of circular air holes. Such a freestanding scheme has the advantages of increased refractive index contrast in the vertical direction and high fabrication quality, − leading to a distinct spectral resonance with a Q-factor of 75 and strong field localization in the LN layer. SHG peaks originating from the pump resonances in the metasurfaces were observed.…”

mentioning

confidence: 99%

Giant Second Harmonic Generation from Membrane Metasurfaces

et al. 2022

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Metasurfaces have emerged as a fascinating framework for nonlinear optics, which have advantages of a compact footprint and unprecedented flexibility in manipulating light. But their nonlinear responses are generally limited by the short interaction lengths with light. Therefore, further enhancement is highly desired for building highefficiency nonlinear devices. Here, we experimentally demonstrate a record high second harmonic generation (SHG) efficiency of 2.0 × 10 −4 using lithium niobate (LN) membrane metasurfaces. Benefiting from the large refractive index contrast in the vertical direction and high fabrication quality, distinct spectral resonances and tight field confinements in the LN layer were achieved. Strong SHG peaks resulting from pump resonances of the metasurfaces were observed. Our nonlinear efficiency is more than 2 orders of magnitude larger than previously reported LN metasurfaces. The results inspire a way to improve the efficiency of nonlinear metasurfaces for ultracompact nonlinear light sources in applications of nonlinear holography, Li-Fi, beam shaping, etc.

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Toward Highly Reliable, Precise, and Reproducible Fabrication of Photonic Crystal Slabs on Lithium Niobate

Cited by 7 publications

References 32 publications

An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

An ultra wideband-high spatial resolution-compact electric field sensor based on Lab-on-Fiber technology

Recent progress in thin-film lithium niobate photonic crystal [Invited]

Giant Second Harmonic Generation from Membrane Metasurfaces

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