Observation of the photonic Hall effect and photonic magnetoresistance in random lasers

Wenyu Du, Lei Hu, Jiangying Xia, Lin Zhang, Siqi Li, Yan Kuai, Zhigang Cao, Feng Xu, Yu Liu, Kaiming Zhou, Kang Xie, Benli Yu, Ernesto P. Raposo, Anderson S. L. Gomes, Zhijia Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Modulation of scattering in random lasers (RLs) by magnetic fields has attracted much attention due to its rich physical insights. We fabricate magnetic gain polymer optical fiber to generate RLs. From macroscopic experimental phenomena, with the increase of the magnetic field strength, the magnetic transverse photocurrent exists in disordered multiple scattering of RLs and the emission intensity of RLs decreases, which is the experimental observation of photonic Hall effect (PHE) and photonic magnetoresistance (PMR) in RLs. At the microscopic level, based on the field dependence theory of magnetic disorder in scattered nanoparticles and the replica symmetry breaking theory, the magnetic-induced transverse diffusion of photons reduces the scattering disorder, and then decreases the intensity fluctuation disorder of RLs. Our work establishes a connection between the above two effects and RLs, visualizes the influence of magnetic field on RL scattering at the microscopic level, which is crucial for the design of RLs.
Original languageEnglish
Article number4589
Pages (from-to)4589
Number of pages10
JournalNature Communications
Issue number1
Early online date30 May 2024
Publication statusPublished - 30 May 2024

Bibliographical note

Copyright © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License.

Data Access Statement

The online version contains supplementary material available at


Dive into the research topics of 'Observation of the photonic Hall effect and photonic magnetoresistance in random lasers'. Together they form a unique fingerprint.

Cite this