Development of an ODMR-based Quantum Sensing Device

Optically Detected Magnetic Resonance (ODMR) based on nitrogen-vacancy (NV) centers in diamonds has emerged as a versatile technique for sensing applications due to its exceptional sensitivity to electromagnetic fields, as well as temperature variations. The development of compact and portable devices leveraging this technology holds significant potential for advancing sensing capabilities in various fields. In this work, we detail the experimental integration of essential components—namely, a controllable resonance frequency (RF) source & antenna, solenoid, and an LED—into an ODMR measurement system. Utilizing these components allows for more possibilities when designing and realizing a portable electron spin-based quantum sensor. Through analysis of the NV^- & NV⁰ peaks with varying laser power, our results demonstrate a low-power regime excitation source works best, further demonstrating the feasibility of a more compact ODMR system without hindrance to performance.