Amplitude-phase imaging of pulsed broadband terahertz vortex beams generated by spiral phase plate
| Autor: | Nikolay V. Petrov, Ya. V. Grachev, Maksim S. Kulya, A. N. Tsypkin, Sergey E. Putilin, V A Semenova, Victor G. Bespalov |
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| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Physics business.industry Terahertz radiation Phase (waves) Holography Physics::Optics 02 engineering and technology 01 natural sciences Pulse (physics) law.invention 010309 optics 020210 optoelectronics & photonics Optics Amplitude law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering business Optical vortex Spiral |
| Zdroj: | 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). |
| DOI: | 10.1109/irmmw-thz.2016.7758823 |
| Popis: | We present a simulation-based and experimental study propagating broadband terahertz vortex beams generated by a spiral phase plate. Numerical simulation based on scalar diffraction theory was used to obtain the spatial amplitude and phase distributions of the broadband (0.1 to 2.5 THz) vortex beam at different distances from the spiral phase plate. For experimental studies, THz pulse time-domain holography was applied to retrieve spatial amplitude and phase distributions of propagating vortex beams. |
| Databáze: | OpenAIRE |
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