TeraScan ultra
Ultra-high-precision, comb-locked cw-terahertz platform
No limiTHz with the highest resolution in terahertz metrology
TeraScan ultra
Ultra-high-precision, comb-locked cw-terahertz platform
The TeraScan ultra serves applications that require ultimate stability in both the frequency and phase of THz signals. The TeraScan ultra thus becomes a unique solution for photonic vector network analysis up to 5 THz, as well as THz communication research, channel sounding, wafer inspection, and high-resolution spectroscopy. Wherever the highest spectral resolution, phase stability, and tuning accuracy in the terahertz range are essential, the TeraScan ultra sets the benchmark.
And this is how it works. Two diode lasers are phase-locked to an optical frequency comb, and a photomixer emitter converts their beat signal into a tunable, monochromatic terahertz wave. With TOPTICA’s patented “endless frequency shifter” concept, the tunable laser remains precisely controlled throughout the entire scan range, ensuring seamless tuning without loss of lock. In this way, the extraordinary phase-noise stability of the frequency comb is faithfully transferred into the THz domain.
Combining a bandwidth of 5 THz with single-Hz frequency resolution, the TeraScan ultra delivers a level of spectral purity and measurement precision unmatched by other THz systems. Its advanced photomixer technology and fully software-controlled scan modes make it ideal for experiments that rely on consistently coherent, ultra-stable terahertz radiation.
Patents:
· US 8,743,919 and EP 2577820, Coherent phase shifting
· DE 10 2018 109 718, Tunable monochromatic detector
Your Benefits
Ultra-high-precision in THz spectrum analysis & communication research
- High frequency stability combined with lowest phase noise make the TeraScan ultra a unique tool in vector network analysis (PVNA) and in terahertz channel sounding.
Ultimate resolution in THz spectroscopy
The TeraScan ultra allows extremely precise tuning of the THz frequency, achieving a frequency resolution unmatched by any other THz platform. Its spectral resolution of 1 Hz is pushing the boundaries in terahertz spectroscopy.
Options
GaAs and InGaAs Photomixers
Both material systems offer an excellent bandwidth and dynamic range. The modules come equipped with a Silicon lens and SM/PM fiber pigtail. The all-fiber design eliminates the need for time-consuming laser beam alignment, and enables an easy and flexible integration into any terahertz assembly.
Related Products
Downloads
Literature
Scientific Publication
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Photonic, broadband, and high-resolution characterization of a 415 GHz waveguide bandpass filter
S. Müller et al., Photonic, broadband, and high-resolution characterization of a 415 GHz waveguide bandpass filter; IEEE Transact. Terahertz Science Technol. 15:4 (2025) 728 -
Continuously tunable ultra-broadband low-phase noise photonic terahertz oscillator
S. Müller et al., Continuously tunable ultra-broadband low-phase noise photonic terahertz oscillator; J Infrared Milli. Terahz. Waves 46:84 (2025) -
Terahertz photonic heterodyne spectral analysis with (sub-) kHz resolution and 6.5 THz frequency coverage
B. Krause et al., Terahertz photonic heterodyne spectral analysis with (sub-) kHz resolution and 6.5 THz frequency coverage; Nature Comm. 16 (2025) 10594 -
Ultra-high precision comb-locked terahertz frequency-domain spectroscopy of whispering-gallery modes
S. Müller et al., Ultra-high precision comb-locked terahertz frequency-domain spectroscopy of whispering-gallery modes; APL Photon. 9 (2024) 076109