Generation of isolated attosecond pulses in a multi-cycle inhomogeneous two-color field without CEP stabilization

被引：17

作者：

Yuan, Hua ^{[1
,2
]}

He, Lixin ^{[1
,2
]}

Wang, Feng ^{[1
,2
]}

Wang, Baoning ^{[1
,2
]}

Liu, Weiwei ^{[1
,2
]}

Hong, Zuofei ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[3] Wuhan Inst Technol, Lab Opt Informat Technol, Wuhan 430205, Peoples R China

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2017年 / 49卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Isolated attosecond pulse; High-order harmonic generation; Multi-cycle inhomogeneous two-color field; Water window; HIGH-HARMONIC-GENERATION; ENHANCEMENT; IONIZATION;

D O I：

10.1007/s11082-017-1048-x

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We theoretically demonstrate the generation of ultrashort isolated attosecond pulses (IAPs) in the water window region with a multi-cycle inhomogeneous two-color field synthesized by an 800-nm fundamental pulse and a 2000-nm control pulse. The results show that the high-order harmonic generation process is effectively controlled in the temporally and spatially shaped field. An ultra-broadband supercontinuum in the water window region with the photon energies ranging from 387 to 620 eV is generated. Such a supercontinuum supports the generation of an ultrashort IAP with a duration as short as 40 attosecond. Moreover, we analyze the influence of the carrier-envelope phases (CEPs) and the relative phase of the two-color field on the IAP generation. It is shown that our two-color scheme is robust for the generation of sub-80 as IAPs against variations of the CEPs and the relative phase.

引用

页数：12