Dr Wei Wen Wong
Position |
Postdoctoral Fellow |
|---|---|
Department |
Electronic Materials Engineering |
Email |
|
Office |
Physics New 3 13 |
Webpage |
https://www.linkedin.com/in/wei-wen... |
Bottom-up, quasi-bound states in the continuum (quasi-BIC) metasurface lasers
This project aims to demonstrate lasing in a bottom-up metasurface supporting a perturbed symmetry-protected quasi-BIC mode, while exploring its unique optical properties. We will also develop fabrication processes to achieve electrically injected lasing, highlighting the advantages of bottom-up metasurface design over conventional top-down laser fabrication approaches.
Dr Wei Wen Wong, Professor Hoe Tan, Professor Chennupati Jagadish
Directional metasurface lasers based on coupled nanowire pairs
We demonstrate directional emission from III-V nanowire lasers by engineering waveguide modes in optically coupled nanowire pairs. Arrays of such pairs enhance far-field directionality via non-local resonance, highlighting the potential of metasurface lasers as compact, coherent light sources for applications such as LiDAR and beam steering.
Dr Wei Wen Wong, Professor Hoe Tan, Professor Chennupati Jagadish
Bottom-up, parity-time (PT) symmetric micro-cavity lasers
In this project, we aim to explore PT-symmetric lasing in III-V semiconductor micro-cavity lasers that are epitaxially grown on their substrates, free from any etching-induced damage. In particular, we aim to demonstrate performance improvements by exploiting some of the unique features of bottom-up grown laser cavities.
Dr Wei Wen Wong, Professor Hoe Tan, Professor Chennupati Jagadish
Nanowire photonic crystal surface-emitting lasers
In this project, we aim to demonstrate photonic crystal surface-emitting lasers (PCSELs) constructed from vertically-standing III-V semiconductor nanowires as the fundamental building blocks. We will also explore more advanced nanowire-based PCSEL designs, including hetero-lattice PCSELs with enhanced in-plane optical feedback and topological PCSELs.
Dr Wei Wen Wong, Professor Hoe Tan, Professor Chennupati Jagadish
Electrically-injected bottom-up III-V micro-cavity lasers
Bottom-up fabrication of lasers via epitaxial growth is emerging as a promising alternative to conventional top-down methods, offering potential to realize micro-lasers with ultra-low optical losses. In this project, we aim to demonstrate electrically injected lasing in InP/InAsP multi-quantum well micro-ring cavities, grown using the selective area epitaxy technique.
Dr Wei Wen Wong, Dr Tuomas Haggren, Professor Hoe Tan, Professor Chennupati Jagadish
Nano-scale III-V light emitters on Si
Although planar growth of III-V materials on Si has been widely demonstrated, direct growth of III-V nanostructures on Si remains challenging. This project aims to realize InP/InAsP light-emitting nanostructures on Si substrates by engineering the III-V/Si interfacial energy, enabling monolithic integration of active photonic components on silicon.
Dr Wei Wen Wong, Professor Hoe Tan, Professor Chennupati Jagadish
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Updated: 15 May 2024/ Responsible Officer: Director, RSPE/ Page Contact: Physics Webmaster
