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Cardiff University Team Develops Nanolasers On Silicon

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First demonstration showing how photonic band-edge lasers can be integrated directly on patterned silicon-on-insulator platforms

Researchers at Cardiff University have shown tiny light-emitting nanolasers less than a tenth of the size of the width of a human hair can be integrated into silicon chip design.

The photonic band-edge lasers can operate at superfast speeds and have the potential to help the global electronics industry deliver a range of new applications - from optical computing to remote sensing and heat seeking,

“This is the first demonstration that shows how photonic band-edge lasers can be integrated directly on patterned silicon-on-insulator platforms,” said Diana Huffaker scientific director of Cardiff University's Institute for Compound Semiconductors (ICS). Huffake specialises in nanoscale epitaxy, fabrication and optoelectronic devices.

“Silicon is the most widely used material in semiconductor industries. However, it has been difficult to integrate compact light sources on this material. Our research breaks through this barrier by developing extremely small lasers integrated on silicon platforms, applicable to various silicon-based electronic, optoelectronic, and photonic platforms.”

The paper, 'Room‐Temperature InGaAs Nanowire Array Band‐Edge Lasers on Patterned Silicon‐on‐Insulator Platforms', has been published in Physica Status Solidi - RRL.

Wyn Meredith, director of the Compound Semiconductor Centre, a Joint Venture between IQE Plc and Cardiff University, said: “This research will have long-term implications in the rapidly expanding field of photonics, with a particular emphasis on driving commoditisation of high volume, high specification optical components for mass market communications and sensing applications.“

Cardiff University, IQE and the Compound Semiconductor Centre are members of CS Connected - the world's first hub for compound Semiconductor technologies based in South Wales.

The ICS is due to move to a new state-of-the-art Translational Research Facility on Cardiff Innovation Campus in 2021.

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