Nanoimprinting of Refractive Index: Patterning Subwavelength Effective Media for Flat Optics
Nanoimprinting of Refractive Index: Patterning Subwavelength Effective Media for Flat Optics
复制标题
折射率纳米压印:平面光学的亚波长有效介质图案化
DOI:
10.1021/acsanm.0c01395
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发表时间:
2020
影响因子:
5.9
通讯作者:
Ryckman, Judson D.
中科院分区:
文献类型:
--
作者:
Talukdar, Tahmid H.;Perez, Julius C.;Ryckman, Judson D.
Subwavelength effective media offer a powerful tool for tailoring optical properties on the surface of a chip but remain challenging to realize at optical frequencies owing to their demand for nanoscale features. To meet this challenge, a simple two-step method for patterning refractive index on the surface of a chip is introduced. The process is referred to as “nanoimprinting of refractive index” (NIRI) and relies on the direct nanoimprinting and plastic deformation of high-porosity mesoporous silicon thin films. This is shown to enable very wide and patternable tuning of refractive index over a range Δn≈ 1 RIU. Investigation of the effective medium response to film compression reveals close agreement to effective medium theory only after factoring in the contribution from the nanoscaled native oxide. NIRI opens a new route for harnessing the subwavelength degree of freedom and offers the prospect of realizing high-performance and low-cost flat optics.
影响因子:
4
作者:
K. Hakshur;S. Ruschin
通讯作者:
S. Ruschin
影响因子:
16.6
作者:
Jahani S;Kim S;Atkinson J;Wirth JC;Kalhor F;Noman AA;Newman WD;Shekhar P;Han K;Van V;DeCorby RG;Chrostowski L;Qi M;Jacob Z
通讯作者:
Jacob Z
影响因子:
3.4
作者:
Bohling, Christian;Sigmund, Wolfgang
通讯作者:
Sigmund, Wolfgang