Spectral phase interferometry for direct electric field reconstruction of chirped wavepackets generated from a tapered undulator

Takao Fuji; T. Tanaka; T. Kaneyasu; Yuichiro Kida; K. Imamura; Satoshi Hashimoto; Aoi Gocho; Keisuke Kaneshima; Yoshihito Tanaka; Masahiro Katoh

doi:10.1364/opticaopen.30069238.v2

Abstract

Tapered undulators are designed to generate broadband, chirped radiation for advanced synchrotron light sources. However, the complete electric-field waveform of the radiation has never been directly measured. Here, we report the first direct characterization of a chirped wavepacket generated from a tapered undulator using spectral phase interferometry for direct electric-field reconstruction (SPIDER). The retrieved spectral phase reveals a distinct linear chirp, and its magnitude shows essential agreement with theoretical predictions. This work provides the first experimental validation of the chirped waveform generated from an undulator, enabling advanced temporal control of next-generation light sources.

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Year: 2025
Type: article
Citations: 0
Access: Closed

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APA Style

                            
                                    Takao Fuji, 
                                
                                    T. Tanaka, 
                                
                                    T. Kaneyasu
                                
                                et al.
                            
                            (2025). 
                            Spectral phase interferometry for direct electric field reconstruction of chirped wavepackets generated from a tapered undulator. 
                            
                            .
                            https://doi.org/10.1364/opticaopen.30069238.v2

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DOI: 10.1364/opticaopen.30069238.v2

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Data completeness: 70%