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Multifunctional volumetric meta-optics for color and polarization image sensors: supplementary material
| Content Provider | Semantic Scholar |
|---|---|
| Author | Camayd-Muñoz, Philip Ballew, Conner Roberts, Gregory C. Faraon, Andrei |
| Copyright Year | 2020 |
| Abstract | cubic design region. This represents an expansive design space with the capacity to express a broad range of complex optical multifunctionality. However, identifying the optimal index distribution for a given target function remains a challenging inverse design problem, particularly for strongly scattering devices [1]. Therefore, we adopt an iterative approach guided by gradient descent (Fig. S1) in order to efficiently generate complex 3D designs [2]: starting from an initial index distribution, we use full-wave simulations (FDTD) to calculate the sensitivity of the sorting efficiency with respect to perturbations of the refractive index. The sensitivity can be calculated from just two simulations, allowing efficient optimization of three-dimensional devices with modest resources. Based on the sensitivity, we modify the initial design in order to maximize the performance while conforming to fabrication constraints. This update process is repeated until the optimized device can efficiently perform the target function. For the designs presented in this manuscript, we start with a |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://s3-eu-west-1.amazonaws.com/pstorage-osa-2151918321/22126086/4296347.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
