On-chip Tunable UV Lasers Based on the AlOx Photonic Platform

Ultraviolet photonics is an emerging field with strong potential for biosensing, spectroscopy, and imaging applications. While low-loss AlOx photonic platforms have recently demonstrated excellent performance in the UV and visible spectral ranges, integrated UV laser sources remain largely unavailable.

This PhD topic aims to develop compact tunable UV laser sources integrated on the AlOx photonic platform. The research will combine photonic circuit design, optical gain characterization using dye-based gain media, fabrication and post-processing, and experimental validation under UV-C optical pumping. The resulting sources will support sensing applications and provide powerful tools for the characterization of UV photonic structures such as ring resonators and integrated spectrometers.

The project targets world-first demonstrations of integrated UV lasers and integrated UV dye lasers on chip.