Jul 11, 2021

Recycling Lost Energy: Quantum Laser Turns Energy Loss Into Gain?

Posted by in categories: particle physics, quantum physics, sustainability

A new laser that generates quantum particles can recycle lost energy for highly efficient, low threshold laser applications.

Scientists at KAIST have fabricated a laser system that generates highly interactive quantum particles at room temperature. Their findings, published in the journal Nature Photonics, could lead to a single microcavity laser system that requires lower threshold energy as its energy loss increases.

The system, developed by KAIST physicist Yong-Hoon Cho and colleagues, involves shining light through a single hexagonal-shaped microcavity treated with a loss-modulated silicon nitride substrate. The system design leads to the generation of a polariton laser at room temperature, which is exciting because this usually requires cryogenic temperatures.

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