Laser written nitrogen vacancy centers in diamond integrated with transfer print GaN solid immersion lenses

Laser written nitrogen vacancy centers in diamond integrated with transfer print GaN solid immersion lenses

Laser-written Nitrogen Vacancy (NV−) centers are combined with transfer-printed GaN micro-lenses to increase fluorescent light collection by reducing total internal reflection at the planar diamond interface. We find a 2x improvement of fluorescent light collection using a 0.95 NA air objective at r...

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Bibliographic Details
Main Authors: Cheng, X, Wessling, NK, Ghosh, S, Kirkpatrick, AR, Kappers, MJ, Lekhai, YND, Morley, GW, Oliver, RA, Dawson, MD, Smith, JM, Salter, PS, Strain, MJ
Format: Conference item
Language:English
Published: Society of Photo-Optical Instrumentation Engineers 2024
Description
Summary:Laser-written Nitrogen Vacancy (NV−) centers are combined with transfer-printed GaN micro-lenses to increase fluorescent light collection by reducing total internal reflection at the planar diamond interface. We find a 2x improvement of fluorescent light collection using a 0.95 NA air objective at room temperature, in agreement with FDTD simulations. The nature of the transfer print micro-lenses leads to better performance with lower Numerical Aperture (NA) collection, as confirmed by results with a 0.5NA air objective which show improvement greater than 5x. The approach is attractive for scalable integrated quantum technologies.

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