There Is Not Only One Terahertz Technology
The terahertz spectral range has now been technically developed. Users can choose from a wide range of components and sensors for this frequency range. There is no longer the terahertz gap that was often cited in the past. Users can choose from a wide range of components and sensors for this frequency range.
Since the spectral range has been developed from the two adjacent ranges, there is not THE terahertz technology. Rather, many technological approaches are being taken to tap it. In industrial use can be found:
- Terahertz TDS system (Time Domain Spectroscopy). This technique, based on short-pulse lasers, enables very precise time-of-flight measurements or spectroscopic investigations due to the short pulses or the broad spectrum.
- FMCW radars (Frequency Modulated Continuous Wave). Due to the use of waveguides or integration on a chip, these fully electronic radars have a lower fire energy and thus a lower depth resolution than TDS systems. Due to their special design, they are generally smaller and less expensive than TDS systems and have a higher measurement rate.
Other techniques such as CCS (Cross-Correlation Spectroscopy) and optical FMCW are currently being tested and will reach industrial maturity in the next few years.
We deal with all these techniques and therefore select the most suitable method for the respective application in an open-minded way.