A quantum metasurface breakthrough could finally close the terahertz gap

Detecting light and radiation is essential across the electromagnetic spectrum, but some regions remain especially challenging. One of those is the terahertz (THz) range, which sits between microwaves and infrared light. Existing detectors for these frequencies are often slow, lack sensitivity, or depend on large, costly equipment that frequently requires cryogenic cooling. Researchers have now developed a compact new detector that combines quantum physics with a specially engineered metasurface to significantly improve the way terahertz radiation is captured and converted into electrical signals. Their findings were recently published in Advanced Photonics.

A quantum metasurface breakthrough could finally close the terahertz gap. Detecting light and radiation is essential across the electromagnetic spectrum, but some regions remain especially challenging. One of those is the terahertz (THz) range, which sits between microwaves and infrared light. Existing detectors for these frequencies are often slow, lack sensitivity, or depend on large, costly equipment that frequently requires cryogenic cooling. Researchers have now developed a compact new detector that combines quantum physics with a specially engineered metasurface to significantly improve the way terahertz radiation is captured and converted into electrical signals. Their findings were recently published in Advanced Photonics. A Quantum Approach to Terahertz Detection The new device relies on a phenomenon known as the in-plane photoel...