# Dr. Hitaishi V

**Ph.D. in Physics, Nonlinear Optics & Photonics**

I'm a physicist. Most of my days go into coaxing light through chalcogenide waveguides: engineering dispersion, generating supercontinua, and occasionally breaking things in FDTD simulations so they don't break in the lab.

My Ph.D. at VIT-AP University was on mid-infrared supercontinuum generation and photonic device design. These days I am also working with physics-informed machine learning (PINNs) and inverse design for structured light in fiber systems.

## Contact

- Email: hello@hitaishiv.com
- Location: Karnataka, India
- Website: https://hitaishiv.com
- Google Scholar: https://scholar.google.com/citations?user=3gV4-jIAAAAJ&hl=en
- GitHub: https://github.com/hitaishi2222
- LinkedIn: https://www.linkedin.com/in/hitaishi-v

## Research areas

### Supercontinuum Generation

Mid-IR & broadband SC in chalcogenide waveguides at 4 μm and 6 μm.

### Waveguide Design

Split-core, inverted rib-core, D-shaped and slot architectures.

### Optical Sensing

Tamm-Fano resonance sensors for glucose & refractive-index sensing.

### Physics-Informed ML

PINN-based inverse design for structured light in fiber systems.

### Structured Light

OAM, Laguerre-Gaussian modes, multimode & few-mode fiber optics.

### Quantum Photonics

High-dimensional quantum information and fiber-based quantum networks.

## Education

- **Ph.D. in Physics** — VIT-AP University, Andhra Pradesh (2021 – 2025). Nonlinear optics & integrated photonics
- **M.Sc. in Physics** — JSS College of Arts, Commerce & Science, Mysuru (2018 – 2020)
- **B.Sc.** — Dayananda Sagar College, Bengaluru (2015 – 2018)

## Skills and tools

- **Simulation:** FDTD, FEM, Ansys Lumerical, COMSOL Multiphysics, MEEP, Femwell
- **Programming:** Python, MATLAB, Rust, LaTeX, Typst
- **Open-source EDA:** GDS Factory
- **Domains:** Dispersion Engineering, GNLSE Modeling, Inverse Design, Phase Retrieval

## Selected publications

- **Supercontinuum generation: A comprehensive review of experimental and material advances** — Applied Materials Today (2025). https://www.sciencedirect.com/science/article/pii/S2352940725002239
- **Effects of waveguide dimensions on split-core optical waveguide for dispersion and supercontinuum applications** — Journal of Computational Electronics (2025). https://doi.org/10.1007/s10825-025-02311-8
- **Study of supercontinuum generation in etch-coated tellurium based chalcogenide waveguide** — Optical and Quantum Electronics (2024). https://doi.org/10.1007/s11082-024-07743-3
- **A Tamm–Fano resonance glucose sensor based on Cu and distributed Bragg reflector plasmonic coupling interface in the near-infrared regime** — Optical and Quantum Electronics (2024). https://doi.org/10.1007/s11082-024-07396-2
- **Mid-IR supercontinuum generation using a slab with D-shaped/semi-ellipse core waveguide at 4 μm** — Optical Materials (2024). https://doi.org/10.1016/j.optmat.2023.114668
- **Broadband supercontinuum generation using dispersion engineered As₂Se₃-GeAsSe-GeAsS waveguide at 6 μm** — IEEE Access (2023). https://doi.org/10.1109/ACCESS.2023.3242692
- **Design and analysis of chalcogenide GeAsSe waveguide for dispersion properties** — Advanced Nanomaterials (Springer) (2023). https://doi.org/10.1007/978-981-99-1616-0_9
- **Inverted rib-core chalcogenide waveguide for supercontinuum generation** — IEEE WRAP 2023, IIIT Allahabad (2023). https://doi.org/10.1109/WRAP59682.2023.10712858
- **A metal-DBR interface structure-based Tamm plasmon sensor for refractive index sensing applications** — IEEE WRAP 2023, IIIT Allahabad (2023). https://doi.org/10.1109/WRAP59682.2023.10712807
- **Slot waveguide microring resonator based on silicon nitride for refractive index sensing** — IEEE 5NANO 2022 (2022). https://doi.org/10.1109/5NANO53044.2022.9828972

## Recent writing

- [imli.nvim: A Warm Colorscheme for Neovim](https://hitaishiv.com/blog/imli-nvim-release.md) (2026-10-07) — Why I built my own Neovim colorscheme, what is inside it, and how to install it with lazy.nvim or the native vim.pack.
- [Hello Typst: Math-Heavy Posts, Natively](https://hitaishiv.com/blog/hello-typst.md) (2025-08-20) — Why I'm adding Typst as a first-class writing format for this blog: beautiful equations without the LaTeX baggage.
- [Is AI gonna replace you?](https://hitaishiv.com/blog/ai-gonna-replace-you.md) (2024-08-01) — Adopt or be left behind: why the verdict on AI is simple, and what to do about it.
- [Self-Hosting](https://hitaishiv.com/blog/self-hosting.md) (2024-06-01) — Why I bought a domain on my own name, switched to Linux, and started running local AI. The story behind this website.

## Projects

- **photonics_helper** — A comprehensive Python helper library for photonics and optics: GNLSE solvers, soliton dynamics, Raman modeling, structured light, and FEM mode import. Published on PyPI.
- **laserfun: Custom Raman Scattering in GNLSE** — Extended the laserfun Python library with material-specific Raman response support for the generalized nonlinear Schrödinger equation solver.
- **herdr-fingers** — A smart overlay to pick information from a current pane and send it to the clipboard. A Herdr plugin.
- **my_cv_typst** — A modern CV format written in Typst: a clean, typeset résumé layout.

## Recent news

- **Aug 2025** — Supercontinuum review published in Applied Materials Today.
- **Jun 2025** — Split-core waveguide paper out in Journal of Computational Electronics.
- **Apr 2025** — Custom Raman scattering support merged into laserfun (open source).
- **2025** — Ph.D. completed. Open to postdoc & assistant professor roles.