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

Conference item

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.

Authors: Cheng, X; Wessling, NK; Ghosh, S; Kirkpatrick, AR; Kappers, MJ

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Society of Photo-Optical Instrumentation Engineers
• Host title: Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2024
• Journal: Proceedings of SPIE
• Volume: 12874
• Article number: 1287405
• Publication date: 2024-03-12
• Acceptance date: 2024-01-23
• Event title: SPIE Photonics West LASE 2024
• Event location: San Francisco, California, United States
• Event website: https://spie.org/conferences-and-exhibitions/photonics-west/program/conferences/lase
• Event start date: 2024-01-27
• Event end date: 2024-02-01
• DOI: 10.1117/12.3000474
• EISSN: 1996-756X
• ISSN: 0277-786X
• EISBN: 9781510670099
• ISBN: 9781510670082
• Language: English
• Keywords: solids; diamond; gallium nitride; lenses; quantum emitters; photoluminescence; objectives; fabrication; nitrogen; printing