Hybrid nanodiamond and titanium dioxide nanobeam cavity design

Chung, Kelvin; Karle, Timothy J.; Wang, Cheng; Lončar, Marko; Tomljenovic‐Hanic, Snjezana

doi:10.1364/ome.7.000785

Cited by 2 publications

(9 citation statements)

References 39 publications

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“…One-dimensional nano-beam cavities can simultaneously meet the high Q-factor and low V requirement due to the strong confinement of light [15]. However, in most cases, theoretical designs are inadequate for practical implementation, and a significant mismatch between predicted and actual Q-factor values has been reported [16][17][18]. The Q-factor of a 1D optical cavity is affected by various losses like radiation, waveguide, and material loss.…”

Section: Introductionmentioning

confidence: 99%

“…The 'Gaussian defect region' (hereafter also mentioned as Gaussian cavity) in a photonic crystal lattice is one of the most prominent choices for designing a high-Q as well as low V photonic crystal cavity [19]. There are different kinds of proposed Gaussian cavity structures [16][17][18]20] to reduce the radiation loss [19]. For example, the Gaussian defect region has been demonstrated by linearly decreasing the air hole radius [16,17,20].…”

Section: Introductionmentioning

confidence: 99%

“…There are different kinds of proposed Gaussian cavity structures [16][17][18]20] to reduce the radiation loss [19]. For example, the Gaussian defect region has been demonstrated by linearly decreasing the air hole radius [16,17,20]. For such a cavity, the lattice parameter is constant throughout the one-dimensional lattice (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Engineering a mechanically stable hybrid photonic crystal cavity coupled to color defects in diamond

Majumder

Choudhury

Saha

2022

J. Opt.

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Wavelength scale photonic, high-quality factor (Q-factor), cavities are crucial for enhancing light- matter interaction. Such on-chip hybrid devices could potentially provide a route towards scalable quantum technologies with color defects in diamond. A variety of designs for photonic crystal cavities have been proposed; however, the challenging and multi-step fabrication processes required for such designs limit the experimentally observed Q-factors in addition to significant radiation loss. One possible way to minimize the radiation loss in a one-dimensional (1-D) photonic crystal cavity is by introducing a so-called Gaussian defect region around the cavity. In this work, we propose a versatile approach to designing a Gaussian defect region by changing the lattice parameter in a 1-D photonic crystal. Further, to circumvent the problem of creating freestanding cavities for achieving high-Q factor in a 1-D photonic crystal cavity, we propose a novel hybrid diamond-titanium dioxide (TiO2) based materials for color defects in diamond, in particular the nitrogen-vacancy (NV−) center. Our proposed mechanically stable and high-Q cavity could be crucial for on-chip integration of different nanophotonic components for chip-scale photonic devices. We show via simulations that Q-factor > 105 can be achieved with the device.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Engineering a mechanically stable hybrid photonic crystal cavity coupled to color defects in diamond

Majumder

Choudhury

Saha

2022

J. Opt.

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“…The chemistry of organic‐inorganic hybrid materials has attracted much attention as these materials demonstrate improved mechanical properties . Organic‐inorganic hybrid complexes of titanium(IV) find applications in the field of materials . catalysis, nanotechnology and are used as precursors for the development of TiO 2 by sol gel process .…”

Section: Introductionmentioning

confidence: 99%

“…[5] Organic-inorganic hybrid complexes of titanium(IV) find applications in the field of materials. [6] catalysis, [7] nanotechnology [8] and are used as precursors for the development of TiO 2 by sol gel process. [9] TiO 2 is an important material and exhibits applications in microelectronic devices, [10] catalysis [11] and photocatalysis [12] processes.…”

Section: Introductionmentioning

confidence: 99%

Synergy Between DFT Calculations and Experimental Studies on the Optimized Structures and the Antibacterial Potential of Some Novel Tetra‐ and Penta Coordinated Organic‐ Inorganic Hybrid Complexes of Titanium(IV)

Sharma¹,

Kumar

Jain

et al. 2018

Applied Organom Chemis

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The generation, structure, reactivity and antibacterial potential of some tetraand penta coordinated organic-inorganic hybrid complexes of titanium(IV) were comprehensively studied experimentally and theoretically by using density functional theory (DFT). These complexes were generated by the reaction of titanium isopropoxide with sterically demanding oximes of heterocyclic βdiketones in 1:1 molar ratio in dry benzene. The chemical structures of titanium complexes were systematically modified using relatively sterically undemanding acetoxime as coligand. The reaction of the synthesized complexes TiL(OPr i ) 2 with the relatively undemanding acetoxime in 1:1 molar ratio in dry benzene afforded the complexes of the type TiLL'(OPr i ). Further reaction of the complexes TiLL'(OPr i ) with acetoxime in 1:1 molar ratio in dry benzene resulted in the formation of the complexes of the type TiL(L') 2 . Plausible structures of these newly generated organic-inorganic hybrid complexes of titanium(IV) were suggested on the basis of physico-chemical, spectral and mass studies. The optimized structures of the complexes TiLL'(OPr i ) andTiL(L') 2 were given by density functional theory (DFT/B3LYP method). DFT was used to investigate molecular orbitals, molecular electrostatic potential(MEP) and chemical reactivity of the complexes. Some of these complexs were screened against A.Flavus, P. Aeruginosa and E.Coli. These titanium(IV) complexes are potential candidates for use as antibacterial agents. The antibacterial activity of titanium(IV) complexes has been correlated with some of the principal quantum chemical descriptors.

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Hybrid nanodiamond and titanium dioxide nanobeam cavity design

Cited by 2 publications

References 39 publications

Engineering a mechanically stable hybrid photonic crystal cavity coupled to color defects in diamond

Engineering a mechanically stable hybrid photonic crystal cavity coupled to color defects in diamond

Synergy Between DFT Calculations and Experimental Studies on the Optimized Structures and the Antibacterial Potential of Some Novel Tetra‐ and Penta Coordinated Organic‐ Inorganic Hybrid Complexes of Titanium(IV)

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