What is it about?
Mixing processes are important for a wide range of technical applications. We developed a nonlinear device to directly mix the modulation frequencies of two light beams and called it the Intrinsic Photomixing Detector. The resulting output of the IPD is an electrical signal at the difference frequency. We achieve frequencies in the MHz regime and provide physical understanding of the process.
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Why is it important?
Mixing processes similar or equal to those we showed find applications for example in optical logic computing or sensors for cameras. Our IPD has the advantage of a simple design and easy manufacturing. Thereby it may decrease complexity and costs of those applications in the future.
Perspectives
I think this article shows a nice technique to simplify sensor systems itself as well as their manufacturing process. Further, I am excited to work on the project in the future to demonstrate the IPD in real-life applications together with my colleagues.
Maurice Müller
University of Siegen
Read the Original
This page is a summary of: Intrinsic photomixing detector based on amorphous silicon for envelope mixing of optical signals, APL Photonics, August 2023, American Institute of Physics,
DOI: 10.1063/5.0149024.
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