Generation of a coherent x ray in the water window region at 1 kHz repetition rate using a mid-infrared pump source.
We demonstrate the generation of a coherent x ray in the water window region in a gas cell filled with neon gas using a wavelength-tunable mid-IR femtosecond laser operating at 1 kHz repetition rate. The cutoff energy and conversion efficiency of the water window x ray can be optimized by tuning gas pressure as well as the focal position.
Xiong
Hui
H
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, China.
Xu
Han
H
Fu
Yuxi
Y
Yao
Jinping
J
Zeng
Bin
B
Chu
Wei
W
Cheng
Ya
Y
Xu
Zhizhan
Z
Takahashi
Eiji J
EJ
Midorikawa
Katsumi
K
Liu
X
X
Chen
J
J
D007259:Infrared Rays; D007834:Lasers; D009356:Neon / Q000737:chemistry; D011312:Pressure; D014867:Water; D014965:X-Rays
D014867:Water; D009356:Neon