Coherent water window x ray by phase-matched high-order harmonic generation in neutral media.
We demonstrate the generation of a coherent water window x ray by extending the plateau region of high-order harmonics under a neutral-medium condition. The maximum harmonic photon energies attained are 300 and 450 eV in Ne and He, respectively. Our proposed generation scheme, combining a 1.6 microm laser driver and a neutral Ne gas medium, is efficient and scalable in output yields of the water window x ray. Thus, the precept of the design parameter for a single-shot live-cell imaging by contact microscopy is presented.
Takahashi
Eiji J
EJ
Extreme Photonics Research Group, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. ejtak@riken.jp
Kanai
Tsuneto
T
Ishikawa
Kenichi L
KL
Nabekawa
Yasuo
Y
Midorikawa
Katsumi
K