Professor Hoe Tan
Position |
Professor |
|---|---|
Department |
Electronic Materials Engineering |
Qualifications |
BE (Melb.), PhD (ANU) |
Office phone |
50356 |
Email |
|
Office |
Physics New 3 12 |
Shape engineering of semiconductor nanostructures for novel device applications
This project aims to investigate the growth of III-V semiconductors on pre-patterned nanotemplates. By using different shapes and geometries, it is envisaged that these nanostructures will provide novel architectures for advanced, next generation optoelectronic devices.
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
Nanowire lasers for applications in nanophotonics
This project aims to investigate the concepts and strategies required to produce electrically injected semiconductor nanowire lasers by understanding light interaction in nanowires, designing appropriate structures to inject current, engineer the optical profile and developing nano-fabrication technologies. Electrically operated nanowire lasers would enable practical applications in nanophotonics.
Quantum-well nanowire light emitting devices
In this project we aim to design and demonstrate III-V compound semiconductor based quantum well nanowire light emitting devices with wavelength ranging from 1.3 to 1.6 μm for optical communication applications.
Professor Lan Fu, Dr Ziyuan Li, Professor Hoe Tan, Professor Chennupati Jagadish
Flexible GaN-based UV photodetectors
Flexible GaN for applications in wearable and flexible electronics.
Dr Sonachand Adhikari, Professor Hoe Tan, Professor Chennupati Jagadish
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
Nanowire photodetectors for photonic and quantum systems
Semiconductor nanowires are emerging nano-materials with substantial opportunities for novel photonic and quantum device applications. This project aims at developing a new generation of high performance NW based photodetectors for a wide range of applications.
Flexible, Cost-effective III-V Semiconductor-Perovskite Tandem Solar Cells
This project aims to develop high efficiency, cost-effective III-V semiconductor-perovskite tandem solar cells which are flexible and lightweight, while achieving excellent device stability.
Professor Hoe Tan, Dr Tuomas Haggren, 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
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
Wearable III-V nanofilm photodetectors and sensors
Semiconductor nanofilms are just some tens of nanometres thick single-crystalline structures with lateral dimensions in cm-scale. The ultra-low thickness gives these films interesting properties differing from bulk materials, and enables interesting novel device concepts in photodetection and gas sensing.
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
Electrically injected metasurface lasers
Metasurfaces have emerged as a cornerstone for next-generation optics and optoelectronics. This project aims to create metasurface lasers from III-V semiconductor thin-films, that are additionally pumped electrically.
Dr Tuomas Haggren, Professor Hoe Tan, Professor Chennupati Jagadish
When dialing an ANU extension from outside the university:
- (02) 612 XXXXX (within Australia)
- +61 2 612 XXXXX (outside Australia)
Anti-Spam notice: The email addresses from this directory are made available to support the academic and business activities of ANU. These email addresses are not published as an invitation to receive unsolicited commercial messages or 'spam' and we do not consent to receipt of such materials. Any messages that are received which contravenes this policy is strictly prohibited, and is also a breach of the Spam Act 2003. The University reserves the right to recover all costs incurred in the event of breach of this policy.
Updated: 15 May 2024/ Responsible Officer: Director, RSPE/ Page Contact: Physics Webmaster
