Inverse design of 3D nanophotonic devices with structural integrity using auxiliary thermal solvers

Nanophotonics, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

3D additive manufacturing enables the fabrication of nanophotonic structures with subwavelength features that control light across macroscopic scales. Gradient-based optimization offers an efficient approach to design these complex and non-intuitive structures. However, expanding this methodology from 2D introduces complexities, such as need for structural integrity connectivity. This work a multi-objective method address challenges in designs. Our combines electromagnetic simulations auxiliary heat-diffusion solver ensure continuous material void By modeling regions heat sources boundaries sinks, we optimize structure minimize total temperature, thereby penalizing disconnected cannot dissipate thermal loads. Alongside optical response, metric becomes part our objective function. We demonstrate utility algorithm by designing two devices. The first is focusing element. second waveguide junction, which connects incoming waveguides different wavelengths into outgoing waveguides, are rotated 90° waveguides. pipeline generates digital blueprints fabricable materials, paving way practical nanoprinting applications.

Language: Английский

Optical Supertorque Induced by Mie-Resonant Modes

ACS Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Language: Английский