Photonics Research Group Home
Ghent University Journals/Proceedings
About People Research Publications Education Services
 IMEC
intern

 

Publication detail

Authors: I. Tanghe, T. Vandekerckhove, M. Samoli, A. Waters, D. Harankahage, M. Zamkov, C. Seassal, H-S. Nguyen, D. Van Thourhout, P. Geiregat
Title: Unraveling the Nature of Lasing Emission from Hybrid SiliconNitride and Colloidal Nanocrystal Photonic Crystals with LowRefractive Index Contrast
Format: International Journal
Publication date: 11/2024
Journal/Conference/Book: ACS Photonics
Editor/Publisher: ACS, 
Volume(Issue): 11(11) p.4906-4915
DOI: 10.1021/acsphotonics.4c01410
Citations: Look up on Google Scholar
Download: Download this Publication (6.7MB) (6.7MB)

Abstract

Silicon nitride is used for its low optical loss and high thermal stability, making it a suitable platform for visible-light applications in integrated photonic devices. However, its application has been limited due to inefficient light emission, a problem addressed by integrating various types of light emitters onto the platform. In particular, the integration of solution-processable colloidal nanocrystals (NCs) as optical gain materials onto the silicon nitride platform is a promising route but requires a more solid theoretical footing. By leveraging 2D surface-emitting photonic crystal structures combined with NCs, we effectively confine and manipulate light to achieve lasing from green to red. Building on this, we model the light–matter interactions of the low index contrast NC/nitride platform, validated by extensive experimental validations through Fourier imaging techniques, revealing the full photonic band structure and showing clear mode congestion. These comprehensive studies confirm the potential of hybrid NC-based structures for fully integrated on-chip laser applications and indicate routes for further improvement.

Related Research Topics


Back to publication list