Title :
The quasi-continuum coherent X-ray radiation from the spectral broadening and splitting of high-order harmonics in ionizing gases
Author :
Fangchuan Zhong ; Zhengquan Zhang ; Ruxin Li ; Zhizhan Xu
Author_Institution :
Lab. for High Intensity Opt., Chinese Acad. of Sci., Shanghai, China
Abstract :
Combining the one dimensional propagation equation and the wavelet transform of dipole moment of atoms in an intense laser field, the spectrum of high-order harmonics generated and propagated in an ionizing noble gas has been analyzed. The results show that the spectral lines of the harmonic become broad and then split into peaks when the laser intensity is strong enough to ionize the noble gas, and the harmonic emission therefore become quasicontinuum in the higher order region.
Keywords :
X-ray lasers; X-ray optics; X-ray production; inert gases; optical harmonic generation; photoionisation; wavelet transforms; atoms; dipole moment; high-order harmonics; higher order region; intense laser field; ionizing gases; ionizing noble gas; laser intensity; one dimensional propagation equation; quasi-continuum coherent X-ray radiation; quasicontinuum harmonic emission; spectral broadening; spectral lines; spectral splitting; wavelet transform; Atom lasers; Atomic beams; Atomic measurements; Gas lasers; Harmonic analysis; Optical harmonic generation; Optical propagation; Wavelet analysis; Wavelet transforms; X-ray lasers;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967734
