Factors affecting the optical performance of CVD diamond infrared optics

Mollart, T. P.; Lewis, Keith L.; Pickles, Charles S. James; Wort, C. J. H.

doi:10.1088/0268-1242/18/3/317

Cited by 21 publications

(14 citation statements)

References 15 publications

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“…Singlecrystal CVD diamond has been made with high electrical carrier mobility 18 and with excellent optical properties for etalons operating at 1.55 m. 19 Properties reported by Element Six for their best single-crystal CVD diamond with dimensions of ϳ4 ϫ 4 ϫ 1 mm include the following: 10 For polycrystalline CVD diamond, the absorption coefficient of high quality material with a thickness of 0.5 to 1 mm at 10.6 m is typically 0.03 to 0.07 cm −1 . [20][21][22][23] The substantial temperature dependence of absorption at 10.6 m has been explained in terms of multiphonon processes. 24 The optical constants n and k for polycrystalline CVD diamond have been reported for the range 2.5 to 500 m. 25 The purpose of the present study was to evaluate optical properties of single-crystal epitaxial CVD diamond at 1.064 m relevant to its use as a heat spreading element in the optical path of a solid state laser.…”

Section: Discussionmentioning

confidence: 99%

Optical absorption, depolarization, and scatter of epitaxial single-crystal chemical-vapor-deposited diamond at 1.064μm

et al. 2007

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Epitaxial single-crystal chemical-vapor-deposited diamond with ͑100͒ crystal orientation is obtained from Element Six ͑Ascot, United Kingdom͒ and Apollo Diamond ͑Boston, Massachusetts͒. Both companies supply 5 ϫ 5-mm squares with thicknesses of 0.35 to 1.74 mm. Element Six also provides disks with a state of the art diameter of 10 to 11 mm and a thickness of 1.0 mm. The absorption coefficient measured by laser calorimetry at 1.064 m is 0.003 cm −1 for squares from Element Six and 0.07 cm −1 for squares from Apollo. One Apollo specimen has an absorption coefficient near those of the Element Six material. Absorption coefficients of Element Six disks are 0.008 to 0.03 cm −1 . Each square specimen can be rotated between orientations that produce minimum or maximum loss of polarization of a 1.064-m laser beam transmitted through the diamond. Minimum loss is in the range 0 to 11% ͑mean =5%͒ and maximum loss is 8 to 27% ͑mean= 17% ͒. Element Six disks produce a loss of polarization in the range 0 to 4%, depending on the angle of rotation of the disk. Part of the 0.04 to 0.6% total integrated optical scatter in the forward hemisphere at 1.064 m can be attributed to surface roughness.

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Section: Discussionmentioning

confidence: 99%

Optical absorption, depolarization, and scatter of epitaxial single-crystal chemical-vapor-deposited diamond at 1.064μm

et al. 2007

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“…The refractive index of around 2.4 in the visible and near‐infrared (NIR) spectral regime provides a large index contrast to surrounding optical buffer layers and enables tight light confinement in diamond waveguides . A large bandgap of 5.5 eV gives rise to a transmission window starting in the ultraviolet (UV) and stretching to the very far infrared . The large bandgap also prevents two‐photon absorption even in the visible and NIR regime.…”

Section: Introductionmentioning

confidence: 99%

Diamond as a Platform for Integrated Quantum Photonics

Lenzini¹,

Gruhler²,

Walter³

et al. 2018

Adv Quantum Tech

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Integrated quantum photonics enables the generation, manipulation, and detection of quantum states of light in miniaturized waveguide circuits. Implementation of these three operations in a single integrated platform is a crucial step toward a fully scalable approach to quantum photonic technologies. In this context, diamond has emerged as a particularly promising material as it naturally combines a large transparency range for the fabrication of low‐loss photonic circuits, and a variety of optically active defects for the realization of efficient single‐photon emitters. Furthermore, its high Young's modulus makes it ideal for the implementation of tunable optomechanical devices for active quantum state manipulation. This review reports recent progress on the realization of the main components required for a diamond‐based integrated quantum photonic architecture: single‐photon emitters, static and actively tunable waveguide circuits, and, as a last building block, integrated superconducting single‐photon detectors.

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“…Diamond in particular provides a very large transparency window of 0.22 up to 500 μm in addition to its outstanding thermal, chemical, and mechanical properties . Diamond's chemical stability makes it ideal for operation in aggressive environments .…”

Section: Introductionmentioning

confidence: 99%

Diamond on aluminum nitride as a platform for integrated photonic circuits

Gruhler

Yoshikawa

Rath

et al. 2016

Physica Status Solidi (a)

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Diamond offers superior material properties for realizing advanced integrated optical components. Particularly attractive is its wide transparency window which covers visible and infrared wavelengths. To take advantage of the potential for broadband waveguiding, diamond needs to be surrounded by broadband transparent cladding materials. Here we use diamond deposited onto aluminum nitride as a platform for integrated optics. We demonstrate essential photonic circuitry for coupling light into on-chip waveguides and show transmission both in the near-infrared and visible wavelength range. Our approach holds promise for functional diamond devices that cover spectral regions up to the mid-infrared. Left: Scanning electron micrograph of a diamond waveguide with an overlay of the mode profile. Right: material stack consisting of polycrystalline diamond (PCD) on aluminum nitride (AlN) on silicon (Si) (not to scale)

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Factors affecting the optical performance of CVD diamond infrared optics

Cited by 21 publications

References 15 publications

Optical absorption, depolarization, and scatter of epitaxial single-crystal chemical-vapor-deposited diamond at 1.064μm

Optical absorption, depolarization, and scatter of epitaxial single-crystal chemical-vapor-deposited diamond at 1.064μm

Diamond as a Platform for Integrated Quantum Photonics

Diamond on aluminum nitride as a platform for integrated photonic circuits

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