The TeraScan is TOPTICA’s high-precision frequency-domain terahertz spectroscopy platform, designed for applications that require spectral accuracy and tunability down to the single-MHz level. The systems combine mature distributed feedback (DFB) diode lasers with state-of-the-art GaAs or InGaAs photomixers, and are powered by TOPTICA’s proprietary DLC smart control electronics. This architecture ensures stability, reliability, and ease of use, offering a performance unmatched in continuous-wave terahertz spectroscopy.

Two system versions address different application needs: the TeraScan 780 achieves an outstanding bandwidth, ideal for broad spectral studies, while the TeraScan 1550 sets new benchmarks in terahertz power and dynamic range. With a frequency step size down to 1 MHz and an absolute accuracy better than 2 GHz, the TeraScan enables the resolution of very narrow spectral features.

The TeraScan is thus the system of choice for applications such as low-pressure gas spectroscopy, high-Q resonator analysis, and metamaterial research. Users may also choose to operate the system at an arbitrary fixed frequency, a mode that has proven invaluable in terahertz communication studies. In short, the TeraScan combines bandwidth, power, and precision in cw-THz applications.