TY - JOUR
T1 - Two-Photon Direct Laser Writing of Inverse-Designed Free-Form Near-Infrared Polarization Beamsplitter
AU - Wei, Heming
AU - Callewaert, Francois
AU - Hadibrata, Wisnu
AU - Velev, Vesselin
AU - Liu, Zizhuo
AU - Kumar, Prem
AU - Aydin, Koray
AU - Krishnaswamy, Sridhar
N1 - Funding Information:
H.W. and F.C. contributed equally to this work. K.A. acknowledges support by the Office of Naval Research Young Investigator Program (ONR-YIP) Award (N00014-17-1-2425) and partial support from Air Force Office of Scientific Research Award (FA9550 17-1-0348). S.K. acknowledges support by ONR through grants N00014-16-1-3021 and N00014-15-12935.
Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/11/1
Y1 - 2019/11/1
N2 - This paper presents an inverse-designed 3D-printed polymer-based broadband free-form polarization beamsplitter in the near-infrared. A computational inverse-design method is used to design a thin free-form meta-grating to split normally incident light with different polarizations to different diffraction orders, one toward the left first order and one toward the right first order. The grating is 3D-printed using two-photon direct laser writing. Polarization splitting behavior is experimentally observed in the near-infrared region for wavelengths of 1.3 and 1.55 µm, and with performance metrics close to the simulation values. The proposed platform combining inverse-design and 3D-printing can be extended to the design, fabrication, and integration of multiple broadband photonic structures to build devices with complex functionalities.
AB - This paper presents an inverse-designed 3D-printed polymer-based broadband free-form polarization beamsplitter in the near-infrared. A computational inverse-design method is used to design a thin free-form meta-grating to split normally incident light with different polarizations to different diffraction orders, one toward the left first order and one toward the right first order. The grating is 3D-printed using two-photon direct laser writing. Polarization splitting behavior is experimentally observed in the near-infrared region for wavelengths of 1.3 and 1.55 µm, and with performance metrics close to the simulation values. The proposed platform combining inverse-design and 3D-printing can be extended to the design, fabrication, and integration of multiple broadband photonic structures to build devices with complex functionalities.
KW - inverse design
KW - metamaterials
KW - polarization beamsplitter
KW - two-photon lithography
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U2 - 10.1002/adom.201900513
DO - 10.1002/adom.201900513
M3 - Article
AN - SCOPUS:85070943898
VL - 7
JO - Advanced Optical Materials
JF - Advanced Optical Materials
SN - 2195-1071
IS - 21
M1 - 1900513
ER -