Skip to content
Saharsh Engineering Log

Project archive

Projects

Software applications, electronics, aerospace systems, physics modeling, and quantitative analysis documented with their evidence.

ArraySignal portfolio command center showing performance, expected energy, modeled loss and an actual-versus-expected production chart.
Flagship

Solar photovoltaic performance intelligence: a deployed application for comparing measured and expected production and investigating persistent underperformance. Public demonstrations use fictional/reference data while the analysis pipeline continues to be validated and expanded.

LiveContinuingProduct interfaceQuantitativeSoftware
Major project

I built and simulated a crossed-nanowire optical detector model in Tidy3D FDTD, using orthogonal NbTiN detector elements inside a multilayer SiO₂ and gold optical stack. The completed V1 run records electric-field distributions and directional flux near 1.55 µm. The crossed geometry was intended to reduce polarization dependence, but the surviving simulation uses only one incident linear polarization — so polarization insensitivity remains a design goal rather than a demonstrated result.

In developmentSimulation dataDocumentationComputational ElectromagneticsFDTD
Major project

I designed a computational nanophotonics study around a simple question: can an optical metasurface remain useful after realistic fabrication defects are introduced? The model is a 6 × 6 periodic supercell of TiO₂ nanodisks on glass, with missing disks, radius and height variation, and positional jitter. Instead of optimising only a perfect geometry, I designed the Tidy3D FDTD workflow around robustness — transmission, reflection, diffraction, field behaviour, and a quantitative defect-sensitivity metric. I also iterated through earlier Tidy3D models and completed multiple solver runs. Those development runs used earlier geometry and wavelength settings, so I treat them as evidence of the simulation workflow rather than validation of the final visible-band defect-tolerance study.

In development3D modelSimulation dataComputational ElectromagneticsFDTD