D3-3.5 - Integrated photonic and electronic building blocks for NV-diamond magnetometry

Event

23. ITG/GMA-Fachtagung Sensoren und Messsysteme 2026
2026-06-09 - 2026-06-10
Nürnberg

Band

Vorträge

Chapter

Optische und akustische Messverfahren

Author(s)

L. Schad, S. Epple, M. Kaschel, K. Edelmann, G. Ronniger, J. Anders - Institut für Mikroelektronik Stuttgart, Stuttgart, T. Hoose, M. Thiel - Nanoscribe GmbH & Co. KG, Eggenstein-Leopoldshafen, M. Kern - Institute of Smart Sensors, Stuttgart

Pages

308 - 315

DOI

10.5162/sensoren2026/D3-3.5

ISBN

978-3-910600-11-9

Price

free

Abstract

We present key building blocks for an integrated approach to NV-diamond magnetometry. The work combines application-specific integrated circuits (ASICs) for control and data processing with integrated optical waveguides within a compact architecture. The objective is to investigate miniaturized and scalable implementation strategies for diamond-based NV magnetic field sensors while maintaining suitable optical excitation conditions and compatibility with optical readout. Within a photonic integrated circuit (PIC), both the excitation path and the signal and reference paths were realized on a single chip. Two different photonic chip architecture concepts were implemented and characterized with respect to optical throughput and assembly complexity. Experimental results show that integrated Si₃N₄ waveguides, in combination with additively manufactured micro-optics, can provide efficient diamond excitation with power densities exceeding 1 kW/cm². In addition, preliminary feasibility experiments indicate that the presented approach is compatible with optically detected magnetic resonance (ODMR) measurements. The presented results provide a basis for future integrated NV-based sensing systems.