In research conducted by Cun-Zheng Ning and his ASU and Tsinghua University collaborators, a single layer of 2D material was placed on a carefully designed substrate with gold as a back-gate to control the number of electrons in the material. Another laser pumps the 2D material to create excitons, some of which form trions with the pre-existing electrons. The reflected light is monitored to find the signature of amplification. Graphic courtesy of Cun-Zheng Ning
Scientists have discovered a process of physics that enables low-power nanolasers to be produced in 2D semiconductor materials. Understanding the physics behind lasers at nanoscale and how they interact with semiconductors can have major implications for high-speed communication channels for supercomputers and data centers.
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