Background-free femtosecond autocorrelation in collinearly-aligned inverted field geometry using optical vortices
| Autor: | Alexander Dreischuh, Nikolay Dimitrov, Gerhard G. Paulus, Maya Zhekova, Yinyu Zhang |
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| Rok vydání: | 2022 |
| Předmět: |
Physics
Work (thermodynamics) Range (particle radiation) Field (physics) business.industry Autocorrelation 02 engineering and technology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Interferometry 020210 optoelectronics & photonics Optics 0103 physical sciences Femtosecond 0202 electrical engineering electronic engineering information engineering ddc:530 Electrical and Electronic Engineering Physical and Theoretical Chemistry business Optical vortex Ultrashort pulse |
| Zdroj: | Optics communications 504, 127493 (2022). doi:10.1016/j.optcom.2021.127493 |
| ISSN: | 0030-4018 |
| Popis: | Among the existing techniques for measuring ultrashort pulse durations, the two classical second-order methods - interferometric and the background-free autocorrelation - are distinguished due to their simplicity and reliability. In this work we report on a technique that allows realignment-free switching between these two modes of autocorrelation. It is based on a collinearly aligned inverted-field interferometer and an optical vortex plate that is added/removed in front of the device in order to switch between both modes. Experiment and theoretical modeling confirm the effectiveness of the technique down to the 10-fs range. |
| Databáze: | OpenAIRE |
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