Author/Authors :
Kawachi، Tetsuya نويسنده , , Kado، Masataka نويسنده , , Tanaka، Momoko نويسنده , , Hasegawa، Noboru نويسنده , , Nagashima، Keisuke نويسنده , , Sukegawa، Kouta نويسنده , , Lu، Peixiang نويسنده , , Takahashi، Kenjiro نويسنده , , Namba، Sinichi نويسنده , , Koike، Masato نويسنده , , Nagashima، Akira نويسنده , , Kato، Yoshiaki نويسنده ,
Abstract :
A two-beam chirped-pulse-amplification Nd:glass laser system dedicated to x-ray laser research is described. Each beam provides an output energy of 20 J with a typical pulse duration of 1.3 ps. A prepulse of variable duration is generated by use of a novel, to our knowledge, optical system. A reflection optical system, comprised of an off-axis parabolic mirror and a spherical mirror, produces a line focus with 6-mm length and 15- (mu)m width without chromatic aberration. By use of this pumping laser system, the nickel-like silver x-ray laser at a wavelength of 13.9 nm has been demonstrated.
Keywords :
Spectral density function , harmonizable functions , Estimation , Bias , covariance , aliasing , cyclostationary , Consistency , Doppler , multipath
