TY - JOUR
T1 - Controlling dielectric properties of cBN by an ultrashort double-pulse light
AU - Kong, Xiaoshuang
AU - Wang, Feng
AU - Zhang, Xiaoqin
AU - Liu, Zehui
AU - Pang, Suna
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/2/17
Y1 - 2020/2/17
N2 - The optical responses of wide band gap materials can be manipulated by a purposely designed ultrashort double-pulse light, based on the real-time time-dependent density functional theory. Taking the cubic boron nitride (cBN) as a typical example, we calculate the energy transfer from an ultrashort double-pulse light field to dielectric materials. We show that the purposely designed ultrashort double-pulse light and pulse train can reversibly manipulate the dielectric properties of cBN without damage. By tuning the parameters of light pulse, the cBN will change between isotropic, elliptic and hyperbolic for a particular light frequency at certain time points during the pulse light. We propose that the cBN with reversible but deep nonlinear optical responses excited by the external light field can be used in the ultrafast all-optical signal processing and optical-field-effect devices.
AB - The optical responses of wide band gap materials can be manipulated by a purposely designed ultrashort double-pulse light, based on the real-time time-dependent density functional theory. Taking the cubic boron nitride (cBN) as a typical example, we calculate the energy transfer from an ultrashort double-pulse light field to dielectric materials. We show that the purposely designed ultrashort double-pulse light and pulse train can reversibly manipulate the dielectric properties of cBN without damage. By tuning the parameters of light pulse, the cBN will change between isotropic, elliptic and hyperbolic for a particular light frequency at certain time points during the pulse light. We propose that the cBN with reversible but deep nonlinear optical responses excited by the external light field can be used in the ultrafast all-optical signal processing and optical-field-effect devices.
KW - Transient dielectric properties
KW - Ultrashort double-pulse light
UR - http://www.scopus.com/inward/record.url?scp=85075433783&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2019.126125
DO - 10.1016/j.physleta.2019.126125
M3 - Article
AN - SCOPUS:85075433783
SN - 0375-9601
VL - 384
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 5
M1 - 126125
ER -