On the features of the interference of a set of broadband uniformly topologically charged beams

Nikolay V. Petrov; Maksim S. Kulya; Andrei A. Gorodetsky; Bogdan V. Sokolenko

doi:10.1117/12.2569226

20 August 2020 On the features of the interference of a set of broadband uniformly topologically charged beams

Nikolay V. Petrov, Maksim S. Kulya, Andrei A. Gorodetsky, Bogdan V. Sokolenko

Proceedings Volume 11499, Terahertz Emitters, Receivers, and Applications XI; 114990I (2020) https://doi.org/10.1117/12.2569226
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

In this contribution, we investigate the features of the two-beam interference of a set of wave trains, in which one of the beams contains an orbital angular momentum caused by the presence of inline topologically charged vortices in each spectral component. The infrared pump beam that generates terahertz radiation is first doubled in Mach-Zehnder interferometer with a specific time delay value to form the wave train with quasidiscrete temporal spectrum. Then, the two delayed terahertz pulses are split into two arms. One of the arms contains a delay line and geometric phase shaping elements for broadband uniformly topologically charged beam formation. The resulting structures are combined with a beamsplitter and detected with a terahertz holographic system upon their propagation. We analyze the features of the resulting spatio-frequency structures and discuss the possibility to implement the information encoding without spectral decomposition.

Conference Presentation

Citation Download Citation

Nikolay V. Petrov, Maksim S. Kulya, Andrei A. Gorodetsky, and Bogdan V. Sokolenko "On the features of the interference of a set of broadband uniformly topologically charged beams", Proc. SPIE 11499, Terahertz Emitters, Receivers, and Applications XI, 114990I (20 August 2020); https://doi.org/10.1117/12.2569226

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