Daniela Trasaldino

Major: Computer Science
Mentors: Rosalyn Koscica, Professor John Bowers

FACET REFLECTOR STUDY ON POCKET QUANTUM DOT LASERS

Quantum Dot lasers have high potential as on-chip light emitters for silicon photonics due to their higher tolerance to material defects compared to the previous technology of quantum well lasers. However, optical loss from the mirrors can harm the efficiency and performance of integrated lasers. Therefore, we need to optimize mirror reflectivity. To address this, we designed a device layout with lasers incorporating various facet designs, including cleave, etch, metal, and a novel multimode reflector (MMR) facet. Alongside the mask design, various simulations have been conducted to optimize the reflectivity by maximizing the S11 parameter, aiming to enhance their integration into silicon photonic circuits. This work presents the design strategies, simulation results, and potential outlook for achieving higher reflectivity than existing on-chip lasers.