Diamond‐Based Optical Waveguides, Cavities, and Other Microstructures

Tomljenovic‐Hanic, Snjezana; Karle, Timothy J.; Greentree, Andrew D.; Fairchild, Barbara A.; Stacey, Alastair; Prawer, S.

doi:10.1002/9783527648603.ch10

Cited by 6 publications

(8 citation statements)

References 140 publications

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“…Such manipulation on dimensions approaching the atomic scale may be made possible in future using, for example, tip-enhanced nano-optical techniques 36,37 . This may provide a pathway forward for engineering diamond devices that benefit from increased resolution such as low-loss waveguides 38 , quantum devices [11][12][13]39 , high-speed electronics 40 and high-density data storage 41 . NATURE COMMUNICATIONS | DOI: 10.1038/ncomms4341 ARTICLE 11 ns full-width-half maximum and repetition rate 13-14 kHz was focused to a waist radius of 4.8 mm on the sample top surface using a 25 mm focal length objective.…”

Section: Discussionmentioning

confidence: 99%

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

2014

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Optical techniques have advanced considerably in recent years to enable processing of surfaces with a resolution less than the wavelength of light. Despite the highly selective nature of light-matter interactions, however, efforts to increase resolution to the scale of single atoms are hampered by rapid and efficient dissipation of the absorbed energy to the surrounding matrix. Here we show that two-photon surface excitation using ultraviolet light provides a method for selectively removing carbon from diamond surfaces. Polished surfaces etched by this method develop ultra-deep subwavelength structures with morphologies dependent on the polarization of the incident laser with respect to the crystal axes. As well as revealing a practical and versatile method for nano-patterning of diamond surfaces, we show that the results comprise mesoscopic evidence for bond scission via a highly localized optical interaction that may lead to the development of new optical approaches for ultra-nanoscale (o10 nm) surface structuring.

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Section: Discussionmentioning

confidence: 99%

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

2014

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“… ( a ) Schematic of the NV − center in a diamond lattice showing the vacancy (V) and the substitutional nitrogen atom (red). ( b ) Energy level diagram of NV − center 8 . ( c ) Photoluminescence (PL) spectrum of NV − center at room temperature with a zero phonon line at 637 nm and phonon side band from 650–750 nm is shown.…”

Section: Figurementioning

confidence: 99%

“…Color centers in nanodiamonds (NDs) have been explored extensively due to their photostable single photon emission at room temperature 3 8 . The negatively charged nitrogen vacancy (NV − ) is one of several color centers (or optically active defects) in diamond, which is known for its unique optical properties including room-temperature photostable emission 8 and high quantum efficiency 9 . The NV − center consists of a substitutional nitrogen atom adjacent to a vacancy in the diamond lattice as pictured in Fig.…”

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Lifetime Reduction and Enhanced Emission of Single Photon Color Centers in Nanodiamond via Surrounding Refractive Index Modification

Khalid

Chung

Rajasekharan

et al. 2015

Sci Rep

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The negatively-charged nitrogen vacancy (NV−) center in diamond is of great interest for quantum information processing and quantum key distribution applications due to its highly desirable long coherence times at room temperature. One of the challenges for their use in these applications involves the requirement to further optimize the lifetime and emission properties of the centers. Our results demonstrate the reduction of the lifetime of NV− centers, and hence an increase in the emission rate, achieved by modifying the refractive index of the environment surrounding the nanodiamond (ND). By coating the NDs in a polymer film, experimental results and numerical calculations show an average of 63% reduction in the lifetime and an average enhancement in the emission rate by a factor of 1.6. This strategy is also applicable for emitters other than diamond color centers where the particle refractive index is greater than the refractive index of the surrounding media.

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“…Traditional optical devices on CVD diamond (e.g. waveguides and photonic crystals) are based on its post-growth treatment, for example on the creation of a periodic pattern in a CVD diamond film by electronic beam lithography, focused ion beam milling or a laser beam ablation [1]. However, such technologies have intrinsic limitations connected with difficulty to achieve a desirable spatial resolution, problems of reproducibility, defects and the roughness of the structure interfaces resulting in undesirable photon scattering.…”

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confidence: 99%

Diamond Bragg superlattice grown in microwave gas discharge for obtaining photoluminescence of single diamond color centers comprising a dense 3D ensemble

et al. 2017

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Diamond‐Based Optical Waveguides, Cavities, and Other Microstructures

Cited by 6 publications

References 140 publications

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces

Lifetime Reduction and Enhanced Emission of Single Photon Color Centers in Nanodiamond via Surrounding Refractive Index Modification

Diamond Bragg superlattice grown in microwave gas discharge for obtaining photoluminescence of single diamond color centers comprising a dense 3D ensemble

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