title: Microscopic diamond solid-immersion-lenses fabricated around single defect centers by focused ion beam milling.
abstract: Recent efforts to define microscopic solid-immersion-lenses (SIL) by focused ion beam milling into diamond substrates that are registered to a preselected single photon emitter are summarized. We show how we determine the position of a single emitter with at least 100 nm lateral and 500 nm axial accuracy, and how the milling procedure is optimized. The characteristics of a single emitter, a Nitrogen Vacancy (NV) center in diamond, are measured before and after producing the SIL and compared with each other. A count rate of 1.0 × 10(6) counts/s is achieved with a [111] oriented NV center.
authors.affiliation: 3. Physikalisches Institut and Stuttgart Research Center of Photonic Engineering (SCoPE), Universität Stuttgart, Pfaffenwaldring 57, Stuttgart D-70569, Germany.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Jamali
authors.affiliation: 3. Physikalisches Institut and Stuttgart Research Center of Photonic Engineering (SCoPE), Universität Stuttgart, Pfaffenwaldring 57, Stuttgart D-70569, Germany.
authors.forename: Ilja
authors.initials: I
authors.lastname: Gerhardt
authors.affiliation: 3. Physikalisches Institut and Stuttgart Research Center of Photonic Engineering (SCoPE), Universität Stuttgart, Pfaffenwaldring 57, Stuttgart D-70569, Germany.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Rezai
authors.affiliation: Institute for Technical Optics (ITO), Universität Stuttgart, Pfaffenwaldring 7, Stuttgart D-70569, Germany.
authors.forename: Karsten
authors.initials: K
authors.lastname: Frenner
authors.affiliation: 3. Physikalisches Institut and Stuttgart Research Center of Photonic Engineering (SCoPE), Universität Stuttgart, Pfaffenwaldring 57, Stuttgart D-70569, Germany.
authors.forename: Helmut
authors.initials: H
authors.lastname: Fedder
authors.affiliation: 3. Physikalisches Institut and Stuttgart Research Center of Photonic Engineering (SCoPE), Universität Stuttgart, Pfaffenwaldring 57, Stuttgart D-70569, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Wrachtrup