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Silicon QCL Forgoes External Light Source

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A novel laser technology, consisting of a quantum cascade laser built on silicon, eliminates the need for an external light source for mid-infrared (MIR) silicon photonic devices or photonic circuits. This advance may have multiple applications that range from chemical bond spectroscopy and gas sensing to astronomy and free-space communications. By directly bonding an III-V layer on top of a silicon wafer and then using the III-V layers to generate gain for the laser, researchers at the University of California, Santa Barbara, were able to integrate a multiple quantum well laser on...Read full article

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