What is it about?
Computing with light requires thousands of lasers to be grown directly onto a semiconductor wafer. For the first time, we show that yield can be optimized to over 95% through geometric and growth conditions. This work provides a route to creating high quality on-chip lasers for future photonic integration.
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Photo by JJ Ying on Unsplash
Why is it important?
To build circuits which operate using light instead of electricity, we need three elements: a light source, light manipulation components (switches, arithmetic, routing and memory) and light detection. Such circuits could provide faster, cheaper, lower energy routes to computing. To date, the development of a coherent laser-like source that can be built onto a chip is lacking.
Perspectives
This work was the first opportunity to apply our high-throughput experiments to micro-ring (on-chip) lasers. To show that the yield was so high provides a great example of collaboration between growth and characterization teams, even when they are on opposite sides of the world.
Dr Patrick Parkinson
University of Manchester
Read the Original
This page is a summary of: Bottom-up, Chip-Scale Engineering of Low Threshold, Multi-Quantum-Well Microring Lasers, ACS Nano, July 2023, American Chemical Society (ACS),
DOI: 10.1021/acsnano.3c04234.
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