TY - JOUR

T1 - Bichromatic UV detection system for atomically-resolved imaging of ions

AU - Nordmann, T.

AU - Wickenhagen, S.

AU - Doležal, M.

AU - Mehlstäubler, T. E.

N1 - Funding Information: We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG) through Grant No. CRC 1227 (DQ-mat, Project No. B03) and through Germany’s Excellence Strategy EXC2123 QuantumFrontiers. We thank department 5.5 for the machining of the mechanical mounting of the setup and, especially, M. Müller for its design. Furthermore, we thank J. Kiethe and J. Keller for helpful discussions and comments on the manuscript.

PY - 2023/6

Y1 - 2023/6

N2 - We present a compact bichromatic imaging system, located outside of the vacuum chamber of a trapped ion apparatus that collects the fluorescence of 230.6 and 369.5 nm photons simultaneously on a shared electron-multiplying charge-coupled device (EMCCD) camera. The system contains two lens doublets, consisting of a sphere and an asphere. They provide a numerical aperture of 0.45 and 0.40 at 230.6 and 369.5 nm, respectively, and enable spatially resolved state detection with a large field of view of 300 μm for long 115In+/172Yb+ Coulomb crystals. Instead of diffraction-limited imaging for one wavelength, the focus in this system is on simultaneous single-ion resolved imaging of both species over a large field, with special attention to the deep UV wavelength (230.6 nm) and the low scattering rate of In+ ions. The introduced concept is applicable to other dual-species applications.

AB - We present a compact bichromatic imaging system, located outside of the vacuum chamber of a trapped ion apparatus that collects the fluorescence of 230.6 and 369.5 nm photons simultaneously on a shared electron-multiplying charge-coupled device (EMCCD) camera. The system contains two lens doublets, consisting of a sphere and an asphere. They provide a numerical aperture of 0.45 and 0.40 at 230.6 and 369.5 nm, respectively, and enable spatially resolved state detection with a large field of view of 300 μm for long 115In+/172Yb+ Coulomb crystals. Instead of diffraction-limited imaging for one wavelength, the focus in this system is on simultaneous single-ion resolved imaging of both species over a large field, with special attention to the deep UV wavelength (230.6 nm) and the low scattering rate of In+ ions. The introduced concept is applicable to other dual-species applications.

UR - http://www.scopus.com/inward/record.url?scp=85163953157&partnerID=8YFLogxK

U2 - 10.48550/arXiv.2302.02489

DO - 10.48550/arXiv.2302.02489

M3 - Article

AN - SCOPUS:85163953157

VL - 94

JO - Review of scientific instruments

JF - Review of scientific instruments

SN - 0034-6748

IS - 6

M1 - 063305

ER -