Grating-assisted coupling to nanophotonic circuits in microcrystalline diamond thin films

Rath, Patrik; Khasminskaya, Svetlana; Nebel, Christoph E.; Wild, C.; Pernice, Wolfram H. P.

doi:10.3762/bjnano.4.33

Cited by 21 publications

(17 citation statements)

References 32 publications

(28 reference statements)

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“…Again the increase in central transmitted wavelength with period can be observed. However, in both wavelength ranges the overall device transmission of 2.5 Â 10 À4 is lower compared to similar devices, e.g., in polycrystalline diamond on SiO 2 (e.g., 5 dB loss per coupler and propagation losses of 5 dB mm À1 ) [48]. The low overall transmission is owed to high propagation losses in the waveguide, as well as to coupling losses of roughly 13 dB per grating coupler.…”

Section: Performance Of Photonic Structuresmentioning

confidence: 80%

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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Section: Performance Of Photonic Structuresmentioning

confidence: 80%

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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“…45 This model, providing a rigorous upper limit of the scattering losses in waveguides, is commonly used to calculate the radiation losses arising from scattering by surface roughness of the waveguide walls. [46][47][48] Taking into account the IR and UV waveguide geometry and waveguide mode data, the model predicts the UV linear losses to be two orders of magnitude larger than the losses in the IR. Consequently, we choose α {p,s} = 100 dB/cm.…”

Section: Raman Lasing Modeling Strategymentioning

confidence: 99%

Modeling and design of infrared and ultraviolet integrated diamond ring Raman lasers

2016

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We numerically investigate the capabilities and advantages of Raman lasers based on integrated single-crystal diamond ring resonators. To this end, we first model continuous-wave (CW) Raman lasing action while taking into account the lasing directionality, the linear and nonlinear losses, and the coupling of the fields between the bus and ring sections of racetrack-shaped diamond ring resonators. We then consider the design of the ring resonators for a short-wavelength infrared (SWIR) and an ultraviolet (UV) Raman laser. Using our Raman lasing model, we determine the lasing directionality, pump threshold and lasing efficiency of the SWIR and UV devices. We find that both can yield efficient CW operation with SWIR and UV lasing slope efficiencies of 33 % and 65 %, respectively. These results showcase the potential of integrated diamond ring Raman lasers for producing wavelengths that are challenging to generate with other types of integrated lasers.

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“…Alternatively, out‐of‐plane coupling can be achieved via reflection at angled total internal reflection mirrors or via tapered fiber coupling . In addition, a very convenient method in terms of simple fabrication and fast out‐of‐plane access to many different circuits is the use of grating couplers (see Figure f) . Furthermore, beam splitters such as y‐splitters and directional couplers (see Figure g) are implemented as a basic part for Mach–Zehnder interferometers and quantum photonic circuits.…”

Section: Fabrication Of Integrated Photonic Circuitsmentioning

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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Grating-assisted coupling to nanophotonic circuits in microcrystalline diamond thin films

Cited by 21 publications

References 32 publications

Diamond on aluminum nitride as a platform for integrated photonic circuits

Diamond on aluminum nitride as a platform for integrated photonic circuits

Modeling and design of infrared and ultraviolet integrated diamond ring Raman lasers

Diamond as a Platform for Integrated Quantum Photonics

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