Intense, mutually coherent beams of multiharmonic extreme ultraviolet light can now be created using seeded free-electron lasers, and the phase difference between harmonics can be tuned with attosecond accuracy. However, the absolute value of the phase is generally not determined. We present a method for determining precisely the absolute phase relationship of a fundamental wavelength and its second harmonic, as well as the amplitude ratio. Only a few easily calculated theoretical parameters are required in addition to the experimental data.
Complete Characterization of Phase and Amplitude of Bichromatic Extreme Ultraviolet Light / Di Fraia, Michele; Plekan, Oksana; Callegari, Carlo; Prince, Kevin C.; Giannessi, Luca; Allaria, Enrico; Badano, Laura; De Ninno, Giovanni; Trovò, Mauro; Diviacco, Bruno; Gauthier, David; Mirian, Najmeh; Penco, Giuseppe; Ribič, Primož Rebernik; Spampinati, Simone; Spezzani, Carlo; Gaio, Giulio; Orimo, Yuki; Tugs, Oyunbileg; Sato, Takeshi; Ishikawa, Kenichi L.; Carpeggiani, Paolo Antonio; Csizmadia, Tamás; Füle, Miklós; Sansone, Giuseppe; Kumar Maroju, Praveen; D’Elia, Alessandro; Mazza, Tommaso; Meyer, Michael; Gryzlova, Elena V.; Grum-Grzhimailo, Alexei N.; You, Daehyun; Ueda, Kiyoshi. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 123:21(2019), pp. 1-7. [10.1103/PhysRevLett.123.213904]
Complete Characterization of Phase and Amplitude of Bichromatic Extreme Ultraviolet Light
D’Elia, Alessandro;
2019-01-01
Abstract
Intense, mutually coherent beams of multiharmonic extreme ultraviolet light can now be created using seeded free-electron lasers, and the phase difference between harmonics can be tuned with attosecond accuracy. However, the absolute value of the phase is generally not determined. We present a method for determining precisely the absolute phase relationship of a fundamental wavelength and its second harmonic, as well as the amplitude ratio. Only a few easily calculated theoretical parameters are required in addition to the experimental data.| File | Dimensione | Formato | |
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PhysRevLett.123.213904.pdf
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