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COEB– Discovering new realms of Optoelectronics

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Overview

COEB has engaged in numerous emerging R&D activities in tandem with the development of photonics technologies in the world from optoelectronics, laser technology, nanophotonics, to biophotonics. COEB will forge ahead through new technology frontiers and is poised to cultivate world-class research and human capital for the vibrant knowledge-based economy for Singapore. The centre’s research activities are divided into 4 thematic programmes: 1) Novel Photonic and Optoelectronic Materials and Devices; 2) Mid-infrared Photonics and Optoelectronics; 3) Photonic Nano-structures and Applications; 4) Biophotonics for healthcare. 

Centre activities and achievements

Future photonic technology will be determined by electronic-photonic integration, i.e. optoelectronics, for ultra-compact high-speed broadband photonic applications such as communication, sensing & spectroscopy, imaging, defense, energy, and manufacturing. This path requires significant technological innovations to develop a novel breed of photonic and optoelectronic components. To accomplish the goal, we have achieved several key milestones in COEB by demonstrating the world’s first mid-infrared optoelectronic based random lasers for speckle-free imaging, the world’s first high responsivity broadband graphene optoelectronic detectors, high power multiwavelength semiconductor lasers covering from the visible to the Terahertz regime, high performance compound semiconductor – silicon hybrid optoeletronic devices, and mid-infrared optoelectronic devices. 

Facilities and Equipment
COEB is equipped with metal organic chemical vapor deposition (MOCVD) system (see Fig.1) for growth of high quality various compound semiconductors including Nitride-based, InP-based, GaAs-based materials, narrow bandgap alloys, semiconductor nanostructures (quantum wells, quantum wires and quantum dots) for numerous optoelectronic devices including semiconductor lasers, photodetectors, modulators, and solar cells, etc.

 

MOCVD system for growth of high quality compound semiconductors for various novel optoelectronic devices.

Conclusion
The roadmap of COEB is charted on the vision, trends and developments of the technology landscape in Singapore. We will continue to engage our local industrial partners on training specialist manpower, consultation and advisory services as well as joint research collaboration to tackle emerging photonic and optoelectronic technologies issues. We will also continue to be mission-driven in alignment with NTU to create a global center of excellence in the area of photonics and optoelectronics.

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