Theoretical seminar | 20 April 2022

The report is a summary of the main results of the Ph. D. thesis. The main goal of the work is to develop new methods of light control for an integrated optical platform based on Bloch surface waves (BSWs) — surface electromagnetic waves at the interface of one-dimensional photonic crystal and adjacent medium. In the work several ways of controlling and exciting BSWs are explored. Firstly, the effect of BSW multimode interference (MMI) is observed and extensively studied. The work presents first demonstration of BSW MMI. Several integrated photonic devices, including couplers and Mach-Zender interferometers based on BSW MMI, are designed. Secondly, excitation of BSW with the Otto configuration is studied. The concept of microprism Otto configuration operating at normal incidence is developed. Microprisms are fabricated with two-photon laser lithography on the surface of photonic crystal. Thirdly, laser source based on halide perovskites nanowires for generation of BSW is demonstrated. The direction and efficiency of BSW generation are thoroughly studied. Finally, several methods for optimizing the parameters of photonic crystals to obtain a target optical response are demonstrated.

Main paper/arXiv, related to the seminar, and other references

1. Safronov K.R., Popkova A.A., Markina D. I. , Pushkarev A., Makarov S.V.,
Bessonov V.O. , Fedyanin A.A. "Efficient Emission Outcoupling from Perovskite
Lasers into Highly Directional and Long-Propagation-Length Bloch SurfaceWaves,"Laser
& Photonics Reviews 16, 2100728 (2022).

2. Safronov K.R., Bessonov V.O., Akhremenkov D.V., Sirotin M. A., Romodina
M.N., Lyubin E.V., Soboleva I.V., Fedyanin A.A. "Miniature Otto Prism Coupler
for Integrated Photonics,"Laser & Photonics Reviews 16, 2100542 (2022).

3. Safronov K. R., Bessonov V. O., Fedyanin A. A. "Optimization of Multilayer Photonic Structures using Artificial Neural Networks to Obtain a Target Optical Response," JETP Letters 114(6), 321-325 (2021)

4. Safronov K.R., Gulkin D.N., Antropov I.M., Abrashitova K.A., Bessonov V.O.,
Fedyanin A.A. "Multimode interference of Bloch surface electromagnetic waves,"ACS
Nano 14(8), 10428–10437 (2020).

5. Abrashitova K.A. , Gulkin D.N., Safronov K.R., Kokareva N.G., Antropov I.M.,
Bessonov V.O., Fedyanin A.A. "Bloch Surface Wave Photonic Device Fabricated
by Femtosecond Laser Polymerisation Technique, "Applied Sciences 8(1), 63–72
(2018).