DPG Phi
Verhandlungen
Verhandlungen
DPG

SAMOP 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 43: QI Poster II (joint session QI/Q)

Q 43.20: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Miniaturized fiber-based endoscope with direct laser written antenna structures — •Stefan Dix1, Jonas Gutsche1, Erik Waller1,2, Georg von Freymann1,2, and Artur Widera11Department of Physics and State Research Center OPTIMAS, University of Kaiserslautern-Landau, 67663 Kaiserslautern, Germany — 2Fraunhofer Institute for Industrial Mathematics ITWM, 67663 Kaiserslautern, Germany

Fiber-based endoscopic sensors are established and widely applied as local fluorescence detectors for various samples, replacing bulky microscopes. Such sensors require the integration of sensing objects, such as nitrogen-vacancy (NV) centers in diamond and microwave antennas on small scales. Here, the microwave (MW) field addresses a transition in the NV center for magnetic field sensing. The MW fields needed are usually created using thin conducting wires or chip-based antennas close to the diamond sample. These approaches either lead to fragile, bulky, or inefficient sensor tips.

Here, we present a robust fiber-based endoscope with a direct laser written silver antenna structure close to a 50 µm multimode fiber core for optimal efficiency. Using such an endoscope, we measure an ODMR sensitivity of 17.8   nT /√Hz by probing 15 µm large diamonds entirely through the endoscope. Furthermore, we demonstrate a new method for measuring distances based on measurements of the Rabi frequency.

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2023 > SAMOP