Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses

J. P. Hadden, J. P. Harrison, Antony C Stanley-Clarke, L. Marseglia, Y.-L. D. Ho, B. R. Patton, Jeremy L O'Brien, J. G. Rarity

Research output: Contribution to journalArticle (Academic Journal)peer-review

171 Citations (Scopus)
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Abstract

The efficiency of collecting photons from optically active defect centres in bulk diamond is greatly reduced by refraction and reflection at the diamond-air interface. We report on the fabrication and measurement of a geometrical solution to the problem; integrated solid immersion lenses (SILs) etched directly into the surface of diamond. An increase of a factor of 10 was observed in the saturated count-rate from a single negatively charged nitrogen-vacancy (NV-) within a 5um diameter SIL compared with NV-s under a planar surface in the same crystal. A factor of 3 reduction in background emission was also observed due to the reduced excitation volume with a SIL present. Such a system is potentially scalable and easily adaptable to other defect centres in bulk diamond.
Translated title of the contributionStrongly enhanced photon collection from diamond defect centres under micro-fabricated integrated
Original languageEnglish
Pages (from-to)241901-1 - 241901-3
Number of pages3
JournalApplied Physics Letters
Volume97
Issue number24
DOIs
Publication statusPublished - 1 Jun 2010

Bibliographical note

Publisher: American Institute of Physics

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