The Science & Technology
Cambridge - Monday 4th to
Wednesday 6th September 2017
article posted 22 June 2017
Yi-Cong Ding is a master student of Abbe School of Photonics, Friedrich Schiller University of Jena, who currently works on optical glass materials. He received his bachelor from
Sun Yat-sen University, Guangzhou, China, in the major of Optical Information Science and Technology.
Glass-based magneto-optical microprobe
Yi-Cong Ding*, Zhi-Wen Pan & Lothar Wondraczek
Laboratory of Glass Science, Otto Schott Institute of Materials Research, Friedrich Schiller University of Jena, Jena, 07743, Germany
Paramagnetic glasses do not only provide magneto-optical performance such as the potential use as Faraday rotators, but also magnetic response. We demonstrate for the first
time how this effect can be exploited in a glass-based magneto-optical fibre probe with micrometric resolution. In our study, we provide a method to calculate the magnetic force acting
on a paramagnetic glass fibre and the relation between the force and the magnetic response. A model has been established to describe magnetic control of the fibre probe. A system has
been built to test the result of the model, which is successfully supported by experimental data. This system enables contact-free optical analyses of flat surfaces, but also offers
new routes for the design and control of optical cavities, for example, in sensing applications.