[P-CTu4] C4. High Power, High Energy Lasers

[P-CTu4-04] Superachromatic Reflective Phase Retarder for the Polarization Conversion of Attosecond Pulses

*Keisuke Sakata¹, Taro Sekikawa¹, Kengo Ito¹ (1. Hokkaido Univ. (Japan))

[Presentation Style] Onsite

A reflective superachromatic phase retarder for extreme ultraviolet attosecond pulses was developed using SiC mirrors. The phase retardation at 28.0 eV is 90° with a deviation less than ±λ/50 for a bandwidth of 3.1 eV.