Optica Open
arXiv.svg (5.58 kB)
Download file

Target-wavelength-trimmed second harmonic generation with gallium phosphide-on-nitride ring resonators

Download (5.58 kB)
posted on 2023-01-12, 14:10 authored by Lillian Thiel, Alan D. Logan, Srivatsa Chakravarthi, Shivangi Shree, Karine Hestroffer, Fariba Hatami, Kai-Mei C. Fu
We demonstrate post-fabrication target-wavelength trimming with a gallium phosphide on silicon nitride integrated photonic platform using controlled electron-beam exposure of hydrogen silsesquioxane cladding. A linear relationship between the electron-beam exposure dose and resonant wavelength red-shift enables deterministic, individual trimming of multiple devices on the same chip to within 30 pm of a single target wavelength. Second harmonic generation from telecom to near infrared at a target wavelength is shown in multiple devices with quality factors on the order of $10^4$. Post-fabrication tuning is an essential tool for targeted wavelength applications including quantum frequency conversion



This arXiv metadata record was not reviewed or approved by, nor does it necessarily express or reflect the policies or opinions of, arXiv.

Usage metrics