TY - JOUR
T1 - Multiband terahertz absorbers using t-shaped slot-patterned graphene and its complementary structure
AU - Xu, Kai Da
AU - Cai, Yijun
AU - Cao, Xianbo
AU - Guo, Yingjiang
AU - Zhang, Yongliang
AU - Chen, Qiang
N1 - Funding Information:
Funding. Japan Society for the Promotion of Science (P19350); Grant-in-Aid for JSPS Research Fellow (JP19F19350); Opening Project of Key Laboratory of Microelectronic Devices & Integrated Technology; Chinese Academy of Sciences.
Publisher Copyright:
© 2020 Optical Society of America.
PY - 2020/10
Y1 - 2020/10
N2 - A dual-band absorber using monolayer periodically T-shaped slot-patterned graphene at terahertz frequencies is presented. By changing the dimensions or Fermi levels of the T-shaped slot-patterned graphene, both of the two absorption bands will be adjusted. The absorber has the characteristics of polarization independence and incident angle insensitivity. Also, its complementary structure, i.e., using periodically T-shaped strip-patterned graphene, is investigated to design another dual-band absorber. Moreover, two triband absorbers are studied through periodically loading four more T-shaped slots and complementary strips in square graphene lattices, respectively. This paper provides a significant paradigm for designing different graphene-based absorbers with multiple absorption bands.
AB - A dual-band absorber using monolayer periodically T-shaped slot-patterned graphene at terahertz frequencies is presented. By changing the dimensions or Fermi levels of the T-shaped slot-patterned graphene, both of the two absorption bands will be adjusted. The absorber has the characteristics of polarization independence and incident angle insensitivity. Also, its complementary structure, i.e., using periodically T-shaped strip-patterned graphene, is investigated to design another dual-band absorber. Moreover, two triband absorbers are studied through periodically loading four more T-shaped slots and complementary strips in square graphene lattices, respectively. This paper provides a significant paradigm for designing different graphene-based absorbers with multiple absorption bands.
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U2 - 10.1364/JOSAB.404062
DO - 10.1364/JOSAB.404062
M3 - Article
AN - SCOPUS:85092294385
SN - 0740-3224
VL - 37
SP - 3034
EP - 3040
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 10
ER -