https://cdn.gophotonics.com/news/cc_639117436503597130.webp712370
TeraSense, a leader in terahertz (THz) imaging systems and components, has developed a proprietary semiconductor-based technology for the generation, detection, and processing of terahertz radiation. The company’s platform enables the creation of compact, high-sensitivity imaging systems operating in the 0.1 - 1 THz frequency range, a spectral region increasingly used for advanced sensing and imaging applications.
At the core of TeraSense’s technology are plasmonic semiconductor detector arrays, which leverage plasma wave excitation in two-dimensional electron systems to convert terahertz radiation into measurable electrical signals. These detectors are designed for room-temperature operation, eliminating the need for complex cooling systems typically required in THz detection. A key advantage of the platform is its ability to produce scalable 2D detector arrays, enabling the development of compact terahertz cameras with high spatial resolution (around 1 mm) and fast image acquisition times, often under one second. These arrays can be manufactured using standard semiconductor fabrication processes, allowing cost-effective mass production and flexible pixel scaling.
TeraSense integrates these detectors into complete imaging systems that include THz sources, optics, antennas, and processing software, forming fully operational solutions for industrial and scientific use. The company’s systems can achieve high-speed imaging rates (up to thousands of frames per second) and are designed for easy integration into larger inspection or monitoring setups.
For terahertz signal generation, TeraSense employs solid-state technologies such as IMPATT diodes, Schottky diodes, and backward-wave oscillators (BWO). These sources can deliver continuous-wave output power up to around 0.5 - 1 W in sub-THz ranges, supporting applications that require stable and relatively high-power radiation. The technology is particularly valuable because terahertz waves can penetrate many non-conductive materials (such as plastics, fabrics, and ceramics) while remaining non-ionizing and safe, making them suitable for a wide range of applications. These include:
- Non-destructive testing (NDT) for industrial quality control
- Security screening (e.g., concealed object detection)
- Medical imaging and diagnostics
- Material characterization and inspection
- Terahertz communication research
TeraSense’s ongoing development efforts focus on improving detector sensitivity and transitioning toward silicon-based fabrication, which could further reduce costs and enable integration of detection and signal processing on a single chip. By combining semiconductor scalability, room-temperature operation, and compact system design, TeraSense’s terahertz technology is helping accelerate the adoption of THz imaging and sensing across industrial, medical, and security applications.
