Cover
Volume 7, Special Issue 4 (2026)

Published: August 25, 2026

Pages: 305-313

Research Article

Magneto-Optical enhancement of silicon nanostructured photodetectors through laser coupling technique

Ali K. Khaleel 1 Shahid R. Qasem 2 Zainab J. Hayder 3 Ghufran A. Sabah 3
1College of medicin, Ibn Sina University of Medical and Pharmaceutical Sciences, Baghdad, Iraq
2college of dentistry, Al-Farahidi university, Baghdad, Iraq
3Department of Medical Instrumentation Techniques, polytechnic college of engineering specializations-Baghdad, Middle Technical University, Baghdad, Iraq
History
  • Received: June 13, 2026
  • Available Online: August 25, 2026
DOI

https://doi.org/10.56967/ejfb2026939

Abstract

In this work, we do a comprehensive examination of the mechanisms of magneto-optical amplification in silicon nanostructured photodetectors, including laser-assisted fabrication and coupling with an external magnetic field. The performance of photodetectors is improved by the crystallinity of Au@Pb core-shell nanoparticles being greatly improved by pulsed laser ablation in liquid (PLAL) under magnetic field. The experimental results demonstrate that the responsivity is enhanced from 0.220 A/W to 0.445 A/W at 550 nm with an external quantum efficiency (EQE) of 95% and a specific detectivity of 2.1 × 1013 Jones with the applied magnetic field of 0.3 T. The primary physical processes are the change of hot electron trajectories by Lorentz force, giant magnetoresistance (GMR) in hybrid metal-semiconductor devices and the Purcell enhancement in magneto-dielectric nanostructures. This work offers the theoretical and practical framework for next-generation silicon-compatible magneto-optical detectors for quantum sensing, optical magnetometry and weak-signal detection

Keywords

References

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