Soft X-ray ptychography system using a Wolter mirror for achromatic illumination optics
Takashi Kimura, Yoko Takeo, Kai Sakurai, Noboru Furuya, Satoru Egawa, Gota Yamaguchi, Yusuke Matsuzawa, Takehiro Kume, Hidekazu Mimura, Mari Shimura, Haruhiko Ohashi, Iwao Matsuda, Yoshihisa Harada
Abstract
A soft X-ray ptychography system using a Wolter mirror for the illumination optics has been developed. By taking advantage of the achromaticity of the optics, the system is capable of seamlessly imaging at half-period resolution of 50 nm with a broad photon-energy range from 250 eV to 2 keV while maintaining the focal position. Imaging a mammalian cell at various wavelengths was demonstrated, and high-resolution visualization of organelle was achieved. Stereo imaging was also performed with a long working distance of 20 mm. In combination with in-situ/operando and tomographic measurements, this system will be a powerful tool for observing biological and material targets with complex features.