congratulation to Our new paper in Journal of Pioneering Advances in Materials
High Signal to Noise Ratio in Miniaturized Atomic Cells by Frequency Modulation Spectroscopy Method
A. Mirazei, M. Sotoudeh, M. Asadolahsalmanpour, M. Mosleh, S. M. Hamidi
Magneto-plasmonic Lab, Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
DOI:10.48308/piadm.2025.105969
Abstract:
Miniaturized atomic vapor cells are emerging as essential components in various applications such as brain signal tracking, nitrogen-vacancy center magnetometry, and electric and magnetic field sensing. However, achieving a high signal-to-noise ratio (SNR) in these compact systems remains a key challenge, which can be addressed using selective spectroscopic techniques. In this study, we present a novel type of atomic vapor cell based on hot rubidium vapor, designed to enhance the spatial resolution of magnetometers. We also demonstrate the advantages of frequency modulation spectroscopy in improving spectral resolution. The cells are fabricated under a base pressure of 10⁻³ mbar and filled with nitrogen gas in a clean vacuum environment. The integration of these miniaturized cells with spectroscopic techniques enables their use in laser feedback loops to lock onto specific atomic transitions. This approach provides new possibilities for next-generation quantum technologies, including quantum sensors, atomic clocks, and quantum computing systems.
Schematic diagram of the experimental setup, with the circular cell shown in the inset