Design, fabrication and characterization of integrated optical elements and circuits for telecommunication and optical biosensors using ion beam techniques
Ph.D. work in Physics
The Research Tasks
Photonics technology is in the process of entering many traditional electronics markets. It started in telecommunications and data centers. More recently it has been spreading to sectors like precision instrumentation, sensing, aerospace, automotive, health-care and defense. Photonic integration has been revolutionizing optics in the latest two decades in a similar way as integrated circuits revolutionized electronics in some over 50 years ago. Optical industry has been concentrated on the improvement of the properties of single components for a long time, investing a lot in finding the best materials, and refining techniques to obtain various devices. Currently photonics companies produce optical chips using standard fabrication processes and materials to make all kinds of devices.
The successful candidate will join a multinational (Hungarian, Italian and Sapnish) ad-hoc team, performing performing research work to develop a novel technology for photonic integrated circuit fabrication using only ion beam implantation and irradiation techniques.
Intensive researches in this field began in 2004. Some of the most important results obtained so far are: Fabrication of channel waveguides [1,3] and planar waveguides  in Er: TeO2-W2O3 optical glass, using MeV energy nitrogen and carbon ion implantation.
The Ph.D. student will have the possibility to participate in the implantation/irradiation of the new samples at the new ion nanobeam line of the MTA Atomki Research Centre (Debrecen, Hungary), as well as in the Tandetron Laboratory of the Řež Nuclear Research Institute (Czech Republic).
His or her main research tasks will be the design and the optical and functional characterizations of the integrated optical elements and circuits, using the following techniques:
- Classical microscopy (interference, phase contrast, INTERPHAKO, DIC)
- M-line spectroscopy (using a METRICON 2010M Prism Coupler)
- Spectroscopic ellipsometry
- Micro Raman spectroscopy
1. S. Berneschi, G. Nunzi Conti, I. Bányász, A. Watterich, N. Q. Khanh, M. Fried, F. Pászti, M. Brenci, S. Pelli, G. C. Righini “Ion beam irradiated channel waveguides in Er3+-doped tellurite glass”, Applied Physics Letters, 90, 121136, (2007)
2. I. Bányász, S. Berneschi, M. Bettinelli, M. Brenci, M. Fried, N.Q. Khanh, T. Lohner, G. Nunzi Conti, S. Pelli, P. Petrik, G.C. Righini, A. Speghini, A. Watterich, Z. Zolnai, MeV energy N+ - implanted planar optical waveguides operating at 1.55 µm, IEEE Photonics Journal, Volume 4, Issue 3, pp. 721-7 , DOI: 10.1109/JPHOT.2012.2194997 (2012)
3. I. Bányász; E. Szilágyi; I. Rajta; et al, Fabrication of low-loss optical channel waveguides for the telecom C band in rare-earth doped optical glass using microbeam of 11 MeV carbon ions, Optical Materials: X, Volume 4, December 2019, 100035 (2019)
The ideal candidate must have a good command of everyday and scientific English. He or she has to be familiar with computer codes for the control and evaluation of experiments, must be willing to continue learning, be laborious, must have his or her own ideas concerning research.