
1.Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
2.School of Mechanical and Aerospace Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, 639798 Singapore, Singapore
3.Panasonic Factory Solutions Asia Pacific (PFSAP), 285 Jalan Ahmad Ibrahim, 639931 Singapore, Singapore
4.Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
5.Department of Mechanical System Design Engineering, Seoul National University of Science and Technology (Seuoltech), 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
6.LASER N GRAPN INC., 193 Munji-ro, Yuseong-gu, Daejeon 34051, Republic of Korea
Young-Jin Kim (yj.kim@kaist.ac.kr)
Published:31 July 2023,
Published Online:15 June 2023,
Received:14 September 2022,
Revised:13 March 2023,
Accepted:30 March 2023
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Lee, Y. et al. Ultra-thin light-weight laser-induced-graphene (LIG) diffractive optics. Light: Science & Applications, 7, 1268-1300 (2023).
Lee, Y. et al. Ultra-thin light-weight laser-induced-graphene (LIG) diffractive optics. Light: Science & Applications, 7, 1268-1300 (2023). DOI: 10.1038/s41377-023-01143-0.
The realization of hybrid optics could be one of the best ways to fulfill the technological requirements of compact
light-weight
and multi-functional optical systems for modern industries. Planar diffractive lens (PDL) such as diffractive lenses
photonsieves
and metasurfaces can be patterned on ultra-thin flexible and stretchable substrates and be conformally attached on top of arbitrarily shaped surfaces. In this review
we introduce recent research works addressed to the design and manufacturing of ultra-thin graphene optics
which will open new markets in compact and light-weight optics for next-generation endoscopic brain imaging
space internet
real-time surface profilometry
and multi-functional mobile phones. To provide higher design flexibility
lower process complexity
and chemical-free process with reasonable investment cost
direct laser writing (DLW) of laser-induced-graphene (LIG) is actively being applied to the patterning of PDL. For realizing the best optical performances in DLW
photon-material interactions have been studied in detail with respect to different laser parameters; the resulting optical characteristics have been evaluated in terms of amplitude and phase. A series of exemplary laser-written 1D and 2D PDL structures have been actively demonstrated with different base materials
and then
the cases are being expanded to plasmonic and holographic structures. The combination of these ultra-thin and light-weight PDL with conventional bulk refractive or reflective optical elements could bring together the advantages of each optical element. By integrating these suggestions
we suggest a way to realize the hybrid PDL to be used in the future micro-electronics surface inspection
biomedical
outer space
and extended reality (XR) industries.
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