New VCSEL design breaks laser power and speed limits: Page 2 of 2

November 20, 2020 // By Jean-Pierre Joosting
New VCSEL design breaks laser power and speed limits
Novel vertical-cavity surface-emitting laser (VCSEL), the workhorses of datacenters and optical sensors, demonstrates record-fast temporal bandwidth.

"Here we introduce a paradigm-shift in laser design. We utilize a novel coupled cavities approach to carefully control the feedback to the laser achieved by significantly slowing the laser light down. This coupled cavity approach adds a new degree of freedom for laser design, with opportunities in both fundamental science and technology." – Volker Sorger, associate professor of electrical and computer engineering at the George Washington University.

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"This invention is timely since demand for data services is growing rapidly and moving towards next generation communication networks such as 6G, but also in automotive as proximity sensor or smart phone's face ID. Furthermore, the coupled cavity system paves a way for emerging applications in quantum information processors such as coherent Ising machines."

The paper, "Hexagonal Transverse Coupled Cavity VCSEL Redefining the High-Speed Lasers," was published today in the journal Nanophotonics.

https://dx.doi.org/10.1515/nanoph-2020-0437

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