Fresnel-type solid immersion lens for efficient light collection from quantum defects in diamond
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-05-26 |
| Journal | Optics Express |
| Authors | SungâJoon Park, Young-Seo Koh, Dongyeon Daniel Kang, Gyeonghun Kim, Kiho Kim |
| Institutions | Duke University, Korea Institute of Science and Technology |
| Citations | 3 |
Abstract
Section titled âAbstractâQuantum defects in diamonds have been studied as a promising resource for quantum science. The subtractive fabrication process for improving photon collection efficiency often require excessive milling time that can adversely affect the fabrication accuracy. We designed and fabricated a Fresnel-type solid immersion lens using the focused ion beam. For a 5.8 ”m-deep Nitrogen-vacancy (NV - ) center, the milling time was highly reduced (1/3 compared to a hemispherical structure), while retaining high photon collection efficiency (> 2.24 compared to a flat surface). In numerical simulation, this benefit of the proposed structure is expected for a wide range of milling depths.