TY - JOUR
T1 - Controlling anisotropy of dielectrics by an ultrashort double-pulse laser
AU - Zhang, Xiaoqin
AU - Wang, Feng
AU - Wang, Xiaoli
AU - Jiang, Lan
N1 - Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2019/1/16
Y1 - 2019/1/16
N2 - We theoretically investigate the control of optical responses of dielectrics by an ultrashort double-pulse laser, based on the real-time time-dependent density functional theory. Taking the diamond as a concrete example, we demonstrate the unique capability of a purposely designed double-pulse laser in manipulating the strong anisotropy of dielectrics, achieving significant benefits compared with a single-pulse laser. With easily tunable laser parameters, the dielectric material can even be switched by reversal of isotropic, elliptic and hyperbolic for a particular light frequency at certain time points during the pulse laser. We describe the evolution of the transient permittivity throughout the duration of the pulse laser, which can exhibit reversible but deeply nonlinear modification in optical responses driven by a purposely designed pulse laser without imposing physical damage, demonstrating a fundamental possibility for applications of ultrafast all-optical signal processing and optical-field effect devices.
AB - We theoretically investigate the control of optical responses of dielectrics by an ultrashort double-pulse laser, based on the real-time time-dependent density functional theory. Taking the diamond as a concrete example, we demonstrate the unique capability of a purposely designed double-pulse laser in manipulating the strong anisotropy of dielectrics, achieving significant benefits compared with a single-pulse laser. With easily tunable laser parameters, the dielectric material can even be switched by reversal of isotropic, elliptic and hyperbolic for a particular light frequency at certain time points during the pulse laser. We describe the evolution of the transient permittivity throughout the duration of the pulse laser, which can exhibit reversible but deeply nonlinear modification in optical responses driven by a purposely designed pulse laser without imposing physical damage, demonstrating a fundamental possibility for applications of ultrafast all-optical signal processing and optical-field effect devices.
KW - coherent control
KW - transient dielectric responses
KW - ultrashort laser pulse
UR - http://www.scopus.com/inward/record.url?scp=85056745210&partnerID=8YFLogxK
U2 - 10.1088/1361-6463/aae9be
DO - 10.1088/1361-6463/aae9be
M3 - Article
AN - SCOPUS:85056745210
SN - 0022-3727
VL - 52
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
IS - 3
M1 - 035106
ER -