All-optical control of high-order harmonic generation in correlated systems

被引：0

作者：

Wang, Yang ^{[1
,2
]}

Gao, Jingsong ^{[1
,2
]}

Liu, Yu ^{[1
,2
]}

Jiang, Pengzuo ^{[1
,2
]}

Xiao, Jingying ^{[1
,2
]}

Zhou, Zhuoyan ^{[1
,2
]}

Yang, Hong ^{[1
,2
,3
,4
,5
]}

Lu, Guowei ^{[1
,2
,3
,4
,5
]}

Peng, Liang-you ^{[1
,2
,3
,4
,5
]}

Liu, Yunquan ^{[1
,2
,3
,4
,5
]}

Gong, Qihuang ^{[1
,2
,3
,4
,5
]}

Wu, Chengyin ^{[1
,2
,3
,4
,5
]}

机构：

[1] Peking Univ, Frontiers Sci Ctr Nanooptoelectron, Beijing 100871, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Frontiers Sci Ctr Nanooptoelect, Sch Phys, Beijing 100871, Peoples R China

[3] Shanxi Univ, Taiyuan 030006, Peoples R China

[4] Peking Univ Yangtze Delta Inst Optoelect, Collaborat Innovat Ctr Extreme Opt, Nantong 226010, Peoples R China

[5] Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226010, Peoples R China

来源：

PHOTONICS RESEARCH | 2024年 / 12卷 / 12期

基金：

中国国家自然科学基金;

关键词：

TRANSITION; PHASE; MEMORY;

D O I：

10.1364/PRJ.534159

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Solid-state high-order harmonic generation (HHG) presents a promising approach for achieving controllable broadband coherent light sources and dynamically detecting materials. In this study, we demonstrate the all- optical control of HHG in a strongly correlated system, vanadium dioxide (VO2), through photo-carrier doping. It has been discovered that HHG can be efficiently modified using a pump laser, achieving modulation depths approaching 100% (extinction ratio >= 40 dB) on femtosecond timescales. Quantitative analysis reveals that the driving forces behind pump-dependent HHG are attributed to two distinct many-body dynamics: the scattering- induced dephasing and the insulator-to-metal transition (IMT) caused by photo-induced electron shielding. These two dynamics play a crucial role in defining the intensity and transient response of the HHG. Furthermore, we demonstrate that it is possible to quantitatively extract the metallic phase fraction from time-resolved HHG (tr-HHG) signals throughout the IMT. This study highlights the benefits of utilizing many-body dynamics for controlling HHG and underscores the necessity for further theoretical research on HHG in strongly correlated systems. (c) 2024 Chinese Laser Press

引用

页码：2831 / 2837

页数：7

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