Broadband supercontinuum harmonics and isolated utrashort attosecond pulse generation by optimizing three-color laser fields. Issue 7 (January 2020)

• Record Type: Journal Article
• Authors: Yu, H-Y; Jiao, Z-H; Zhou, X-X; Li, P-C
• Is Part Of: Journal of physics. Volume 1412:Issue 7(2019)
• Publication Date: 2020-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1412/7/072003
• Languages: English
• ISSNs: 1742-6588

Abstract

Synopsis: We present an efficient scheme for the generation of broadband supercontinuum harmonics and isolated utrashort attosecond pulse by the optimized three-color laser fileds. The optimized laser pulse is synthesized by three one-color laser pulses with proper relative phases. The broadband supercontinuum harmonics are obtained by solving accurately the time-dependent Schrödinger equation using the time-dependent generalized pseudospectral method. Our scheme proposed produces a broadband supercontinuum spectrum with the photon energies near 0.3 keV. As a result, an isolated 17 as pulse can be obtained directly by superposing the supercontinuum harmonics.