All fiber-coupled Terahertz Spectrometer

Menlo THz Systems TERAK15 05 2020 05


Advanced Features and Benefits

  • NEW: >6 THz Bandwidth in <5 s
  • NEW: >100 dB Dynamic Range
  • NEW: Multi THz-Channel Option
  • NEW: THz Path Length Adaptation Option
  • Multicolor Laser Outputs available (1560 nm/780 nm)
  • High Resolution Option: <0.7 GHz with 1600 ps Scan Window All-optical Delay
  • Synchronizable Laser Source (e.g. ASOPS-Convertible or External Pump Laser)
  • Versatile, Scientific THz-TDS Workhorse
  • Measurement Automation and Data Transfer via Network
Spectral range >6 THz
Dynamic range >100 dB
Total scan range >850 ps (Long range variant: >1600 ps)
THz frequency resolution <1.2 GHz (High resolution variant: <0.7 GHz)
Antenna model TERA15-FC*


Laser specifications    
Wavelength 1560 nm 780 nm
Total average output power** >500 mW >250 mW **
Pulse Duration <90 fs <100 fs
Output ports for THz generation

Free space port,

fiber-coupled port on request

Free space port


Dimensions / weight  
Optical unit 900 x 600 x 200 mm3, 34 kg
THz control electronics 448 x 132 x 550 mm3, 8 kg
Laser control unit 448 x 132 x 437 mm3, 12 kg

* See product data sheet for detailed specifications
** Menlo Systems’ C-Fiber 780: freely tunable power ratio between 780 nm and 1560 nm port.


The TERA K15 fiber-coupled terahertz spectrometer provides a complete solution for fast broadband time-domain THz spectroscopy, offering maximum flexibility for scientific THz applications.

The system includes our latest figure 9® femtosecond laser source at 1.5 μm emission wavelength, fiber-coupled optical light path with delay line, a THz wave path with THz Emitter, THz detector and TPX THz optics, control electronics and a PC with data acquisition and evaluation software. The delay line offers flexibility by covering a standard scan window of >850 ps enabling a high spectral (THz) resolution below 1.2 GHz. Customers demanding superior spectral resolution (<0.7 GHz) can opt for the long scan range (>1600 ps). The dual detector option offers simultaneous measurements in transmission and reflection geometry. For THz imaging applications our extension unit TERA Image can be integrated into the setup, including image acquisition and reconstruction software.

Optionally, the system’s laser source is synchronizable to an external source, and can be extended by additional laser output ports at 780 nm and 1560 nm. To perform THz-TDS with optical sample excitation at those wavelengths, the TERA K15 setup can be upgraded with our THz-Pump-Probe add-on.


  • THz Purge Box Extension Unit

    Product Code: THz Purge Box

    Menlo Purge box option 3w 

    Compact purge box for our THz mirror systems for improved, water line free Terahertz spectroscopy.

    Download PDF: Infosheet THz Purgebox

  • TERA Image Extension Unit

    Product Code: TERA Image


    For THz imaging applications our fully automated extension TERA Image can be integrated.


  • ImageLab: Extended Edition THz Image Analysis

    Product Code: ImageLab


    Hyperspectral Image Processing Software for THz Imaging Data


  • Plug-in Terahertz Reflection Head Add-on for flexible THz measurement geometry

    Product Code: Reflection Head

    MENLO THz Reflection Head

    Plug-in THz reflection head with integrated parabolic mirror THz optics. Compatible with Menlo Systems' fiber-coupled THz antennas TERA15-TX-FC (Emitter) and TERA15-RX-FC (Receiver).

    Download PDF: Infosheet THz Reflection Head

  • Reflection Guide Add-on for flexible THz measurement geometry

    Product Code: Reflection Guide


    THz path pivot platform for quick and flexible manual adjustment of the reflection angle, ranging from a minimal reflection angle of 38° to normal up to a stretched configuration for measurements in transmission geometry. A scale for measurement angle indication is included. The platform assures angle adjustment of the sample holder.

Electrical field as a function of time:

Time domain plot demo

Corresponding spectrum of emitted THz radiation:

 Frequency domain amplitude plot demo


Menlo Expert Milan Oeri 2022
Dr. Milan Öri
Your direct line to our expert

Data sheets

Product literature

Ordering information

  • Product Code
  • TERA K15

+49 89 189166 0

Menlo Systems, Inc.
+1 973 300 4490

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