The Experts below are selected from a list of 72087 Experts worldwide ranked by ideXlab platform
Hong X Tang - One of the best experts on this subject based on the ideXlab platform.
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efficient third Harmonic Generation in composite aluminum nitride silicon nitride microrings
Optica, 2018Co-Authors: Joshua B Surya, Hong X TangAbstract:Aluminum nitride and silicon nitride have recently emerged as important nonlinear optical materials in integrated photonics for their quadratic and cubic optical nonlinearity, respectively. A composite aluminum nitride and silicon nitride waveguide structure, if realized, will simultaneously allow highly efficient second- and third-Harmonic Generation on the same chip platform and therefore assists 2f-3f self-referenced frequency combs. On-chip third-Harmonic Generation, being a higher-order nonlinear optics effect, is more demanding than second-Harmonic Generation due to the large frequency difference between the fundamental- and third-Harmonic frequencies, which implies a large change of refractive indices and more stringent requirements on phase matching. In this work we demonstrate high-efficiency third-Harmonic Generation in a high-Q composite aluminum nitride/silicon nitride ring cavity. By carefully engineering the microring resonator geometry of the bilayer structure to optimize the quality factor, mode volume, and modal overlap of the optical fields, we report a maximum conversion efficiency of 180% W−2, corresponding to an absolute conversion efficiency of 0.16%. This composite photonic chip design provides a solution for efficient frequency conversion over a large wavelength span, broadband comb Generation, and self-referenced frequency combs.
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efficient third Harmonic Generation in composite aluminum nitride silicon nitride microrings
arXiv: Optics, 2017Co-Authors: Joshua B Surya, Hong X TangAbstract:Aluminum nitride and silicon nitride have recently emerged as important nonlinear optical materials in integrated photonics respectively for their quadratic and cubic optical nonlinearity. A composite aluminum nitride and silicon nitride waveguide structure, if realized, will simultaneously allow highly efficient second and third Harmonic Generation on the same chip platform and therefore assists 2f-3f self-referenced frequency combs. On-chip third Harmonic Generation, being a higher order nonlinear optics effect, is more demanding than second Harmonic Generation due to the large frequency difference between the fundamental and third Harmonic frequencies which implies large change of refractive indices and more strigent requirements on phase matching. In this work we demonstrate high-efficiency third Harmonic Generation in a high Q composite aluminum nitride / silicon nitide ring cavity. By carefully engineering the microring resonator geometry of the bilayer structure to optimize the quality factor, mode volume and modal overlap of the optical fields, we report a maximum conversion efficiency of $180\%\,\mathrm{W^{-2}}$. This composite photonic chip design provides a solution for efficient frequency conversion over a large wavelength span, broadband comb Generation and self-referenced frequency combs.
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second Harmonic Generation in aluminum nitride microrings with 2500 w conversion efficiency
Optica, 2016Co-Authors: Hong X TangAbstract:Photonic integrated circuits hold promise as miniaturized and scalable platforms for classical and quantum photonic information processing. Second-order nonlinearity (χ(2)) is the basis of many important applications such as second-Harmonic Generation, spontaneous parametric down-conversion, and optical parametric oscillation. Here, we present systematical investigation and optimization of the second-Harmonic Generation in a dual-resonant aluminum nitride microring resonator. By optimizing the quality factor, independently engineering the coupling conditions for dual-band operation, and perfectly fulfilling phase-match conditions through thermal tuning, we demonstrate a second-Harmonic Generation efficiency of 2500% W−1 in the low-pump-power regime. To the best of our knowledge, this is a state-of-the-art value among all the integrated photonic platforms. We also study the high-power regime where the pump power depletion is non-negligible. A conversion efficiency of 12% is realized with 27 mW pump power. Our high-efficiency second-Harmonic generator enables integrated frequency conversion and frequency locking between visible and infrared systems, and our approach can also apply to other photonic platforms.
Hideaki Kano - One of the best experts on this subject based on the ideXlab platform.
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multimodal nonlinear optical imaging of caenorhabditis elegans with multiplex coherent anti stokes raman scattering third Harmonic Generation second Harmonic Generation and two photon excitation fluorescence
Applied Physics Express, 2020Co-Authors: Shinichi Miyazaki, Philippe Leproux, Vincent Couderc, Yu Hayashi, Hideaki KanoAbstract:Multimodal nonlinear optical microscopy was applied to the nematode Caenorhabditis elegans (C. elegans). Transgenic worms expressing the yellow fluorescent protein (YFP) variant Venus underwent analyses. The lipid and protein distribution was clearly visualized using multiplex coherent anti-Stokes Raman scattering (CARS), second-Harmonic Generation (SHG), third-Harmonic Generation (THG), and two-photon excitation fluorescence (TPEF). The TPEF and SHG signals were found to overlap, which allowed the identification of the ventral nerve cord. These findings demonstrate the powerful potential of multimodal nonlinear optical microscopy to reveal C. elegans microstructures in vivo.
Yu Hayashi - One of the best experts on this subject based on the ideXlab platform.
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multimodal nonlinear optical imaging of caenorhabditis elegans with multiplex coherent anti stokes raman scattering third Harmonic Generation second Harmonic Generation and two photon excitation fluorescence
Applied Physics Express, 2020Co-Authors: Shinichi Miyazaki, Philippe Leproux, Vincent Couderc, Yu Hayashi, Hideaki KanoAbstract:Multimodal nonlinear optical microscopy was applied to the nematode Caenorhabditis elegans (C. elegans). Transgenic worms expressing the yellow fluorescent protein (YFP) variant Venus underwent analyses. The lipid and protein distribution was clearly visualized using multiplex coherent anti-Stokes Raman scattering (CARS), second-Harmonic Generation (SHG), third-Harmonic Generation (THG), and two-photon excitation fluorescence (TPEF). The TPEF and SHG signals were found to overlap, which allowed the identification of the ventral nerve cord. These findings demonstrate the powerful potential of multimodal nonlinear optical microscopy to reveal C. elegans microstructures in vivo.
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Multimodal nonlinear optical imaging of Caenorhabditis elegans with multiplex coherent anti-Stokes Raman scattering, third-Harmonic Generation, second-Harmonic Generation, and two-photon excitation fluorescence
'IOP Publishing', 2020Co-Authors: Miyazaki Shinichi, Yu Hayashi, Leproux Philippe, Couderc Vincent, Kano HideakiAbstract:International audienceMultimodal nonlinear optical microscopy was used to analyze the nematode Caenorhabditis elegans (C. elegans) expressing yellow fluorescent protein (YFP) in the neurons. The lipid and protein distributions were clearly visualized using multiplex coherent anti-Stokes Raman scattering (CARS), second Harmonic Generation (SHG), third Harmonic Generation (THG), and two-photon excitation fluorescence (TPEF). The TPEF and SHG signals were found to overlap, which allowed identification of the ventral nerve cord. These findings demonstrate the powerful potential of multimodal nonlinear optical microscopy to reveal C. elegans microstructures in vivo
Shinichi Miyazaki - One of the best experts on this subject based on the ideXlab platform.
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multimodal nonlinear optical imaging of caenorhabditis elegans with multiplex coherent anti stokes raman scattering third Harmonic Generation second Harmonic Generation and two photon excitation fluorescence
Applied Physics Express, 2020Co-Authors: Shinichi Miyazaki, Philippe Leproux, Vincent Couderc, Yu Hayashi, Hideaki KanoAbstract:Multimodal nonlinear optical microscopy was applied to the nematode Caenorhabditis elegans (C. elegans). Transgenic worms expressing the yellow fluorescent protein (YFP) variant Venus underwent analyses. The lipid and protein distribution was clearly visualized using multiplex coherent anti-Stokes Raman scattering (CARS), second-Harmonic Generation (SHG), third-Harmonic Generation (THG), and two-photon excitation fluorescence (TPEF). The TPEF and SHG signals were found to overlap, which allowed the identification of the ventral nerve cord. These findings demonstrate the powerful potential of multimodal nonlinear optical microscopy to reveal C. elegans microstructures in vivo.
Joshua B Surya - One of the best experts on this subject based on the ideXlab platform.
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efficient third Harmonic Generation in composite aluminum nitride silicon nitride microrings
Optica, 2018Co-Authors: Joshua B Surya, Hong X TangAbstract:Aluminum nitride and silicon nitride have recently emerged as important nonlinear optical materials in integrated photonics for their quadratic and cubic optical nonlinearity, respectively. A composite aluminum nitride and silicon nitride waveguide structure, if realized, will simultaneously allow highly efficient second- and third-Harmonic Generation on the same chip platform and therefore assists 2f-3f self-referenced frequency combs. On-chip third-Harmonic Generation, being a higher-order nonlinear optics effect, is more demanding than second-Harmonic Generation due to the large frequency difference between the fundamental- and third-Harmonic frequencies, which implies a large change of refractive indices and more stringent requirements on phase matching. In this work we demonstrate high-efficiency third-Harmonic Generation in a high-Q composite aluminum nitride/silicon nitride ring cavity. By carefully engineering the microring resonator geometry of the bilayer structure to optimize the quality factor, mode volume, and modal overlap of the optical fields, we report a maximum conversion efficiency of 180% W−2, corresponding to an absolute conversion efficiency of 0.16%. This composite photonic chip design provides a solution for efficient frequency conversion over a large wavelength span, broadband comb Generation, and self-referenced frequency combs.
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efficient third Harmonic Generation in composite aluminum nitride silicon nitride microrings
arXiv: Optics, 2017Co-Authors: Joshua B Surya, Hong X TangAbstract:Aluminum nitride and silicon nitride have recently emerged as important nonlinear optical materials in integrated photonics respectively for their quadratic and cubic optical nonlinearity. A composite aluminum nitride and silicon nitride waveguide structure, if realized, will simultaneously allow highly efficient second and third Harmonic Generation on the same chip platform and therefore assists 2f-3f self-referenced frequency combs. On-chip third Harmonic Generation, being a higher order nonlinear optics effect, is more demanding than second Harmonic Generation due to the large frequency difference between the fundamental and third Harmonic frequencies which implies large change of refractive indices and more strigent requirements on phase matching. In this work we demonstrate high-efficiency third Harmonic Generation in a high Q composite aluminum nitride / silicon nitide ring cavity. By carefully engineering the microring resonator geometry of the bilayer structure to optimize the quality factor, mode volume and modal overlap of the optical fields, we report a maximum conversion efficiency of $180\%\,\mathrm{W^{-2}}$. This composite photonic chip design provides a solution for efficient frequency conversion over a large wavelength span, broadband comb Generation and self-referenced frequency combs.
