Saturable absorber |
Custom devices |
Laser
> THz devices
> PCA |
THz lenses |
THz spectometer
> Benchtop TDS |
> Pre-assembled TDS |
THz kit
Saturable absorber |
Custom devices |
Laser
> THz devices
> PCA |
THz lenses |
THz spectometer
> Benchtop TDS |
> Pre-assembled TDS |
THz kit
The pre-assembled THz systems are designed to use a fs laser provided by the customer.
The beam paths for the emitter and detector antennas will be pre-aligned on an optical breadboard.
Therefore, it is only required to feed the laser beam into the optical setup.
Hence, the system is designed for customers who are familiar with optical setups but may not be as familiar with THz
spectrometers. The linear stage and the data acquisition system are controlled using the T3DS software package that comes pre-installed
on a laptop.
We provide spectrometers for pulse lasers with 780 nm, 1060 nm and 1560 nm wavelength with the following parameters:
Video THz imaging using an all-fiber 1550nm TDS system
The performance of the pre-assembled time-domain spectrometer depends mainly on the
used fs laser. The best results are possible with a pulse laser at ~ 800 nm wavelength, having pulse duration
< 100 fs, and pointing stability < 25 μrad.
Due to dispersion and nonlinear effects in an optical fiber the THz bandwidth and dynamic range
of spectrometers with fiber coupled antennas is lower then set-ups with free space optical path.
* Longer scan ranges / higher spectral resolutions are available upon request.
Free space optical path antennas:
Additional fiber coupled antennas:
The measurement capabilities of the pre-assembled THz spectrometers listed above can be extended by additional devices.
Prices apply to individual pieces, we grant a discount for larger quantities. Please ask!
> SHT - Sample Holder Transmission
The sample holder transmission consists of a plate, two sleds with focusing THz lenses, one adapter
for large samples (at least 30 x 30 mm) with collimated THz beam and one adapter for small samples (at least 10 x 10 mm)
with focused THz beam.
The SHT needs as support the sample holder base (SHB) which is not included, but comes with every TDS system.
SHT - Sample Holder Transmission
SHT on base structure
> SHR - Sample Holder Reflection
The sample holder reflection consists of a plate, two sleds with focusing THz lenses, one adapter for large samples
(at least 30 x 30 mm) and one adapter for small samples (at least 10 x 10 mm). The angle of incidence or the SHR is 30° by default.
The sample holder for reflection measurements requires the base structure (SHB) which is not included, but comes with every TDS system.
SHR -Sample Holder Reflection
SHR -front side
> SHA - Sample Holder Attenuated Total Reflection (ATR)
The sample holder for ATR measurements on strong absorbing liquids or solids with a refractive index lower then 2.5
consists of a mounted silicon prism with refractive index 3.416.
The incidence angle of the THz beam on the prism base is 51.6 deg.
The sample holder for ATR measurements requires the base structure (SHB) which is not included, but comes with every TDS system.
SHA with lid
SHA without lid
> SHB - Sample Holder Base
The sample holder base SHB is required for sample holder transmission (SHT), sample holder reflection (SHR) and sample holder attenuated total reflection (SHA). It comes with every TDS system and ensures the correct adjustment of the sample holders in the THz beam.
• Data sheet (pdf)
SHB - Sample Holder Base
SHB with sample holder reflection (SHR)
> CUV - TPX CUVette for THz transmission measurements of liquids
The TPX Cuvette can be used for transmission measurements of liquids. For the best results we recommend using our Sample Holder Transmission (SHT) to position the TPX Cuvette properly in the THz beam path. The SHT comes with every TDS10XX Spectrometer but is not part of the cuvette.
• Material: TPX (Polymethylpentene)
TPX cuvette
Cuvette on base structure
> SHF - Sample Holder for Fiber coupled antennas
The sample holder for fiber coupled antennas consists of a base structure, one adapter
for large samples (at least 30 x 30 mm) with collimated THz beam and one adapter for small samples (at least 10 x 10 mm)
with focused THz beam. The SHF can be used for both, transmission and reflections measurements.
SHF for a) collimated beam, b) focused beam in reflection, c) focused beam in transmission
> FSU - Fast Scan Unit
The Fast Scan Unit is used to change the laser beam path with a frequency of a few Hz in order to get a real time picture of the THz signal. It is typically used as an extension to simplify the signal optimization. Due to the limited scan range and time resolution it cannot be used to collect data at the same quality as with a slow scan measurement. However, the much faster data acquisition allows to change the optical or THz beam while watching the signal live.
•100 Hz @ 5 ps scan
FSU - Fast Scan Unit
FSU with electronic box
> IU150 - Imaging Unit 150 mm x 150 mm
• Imaging unit with x-y scan range 150 mm x 150 mm.
• Larger imaging areas are available on request.
• Can be used in reflection or transmission mode.
• The software for THz imaging and visualization is included.
• The imaging unit needs fiber coupled antennas outside the spectrometer.
• Does not include a sample holder.
• Price: 8,500.- €
IU150 in transmission
IU150 in reflection
2 € coin
visible image
THz amplitude / time delay
height profile image
Integrated THz spectrum
specular reflectance image
> 2TPX - set of two mounted TPX lenses 1" diameter
Set of two mounted aspheric TPX lenses with 1" diameter for transmission measurements on small samples or for THz imaging.
Lenses with the shortest focal lnegth of 10 mm ( F* = 0.5) ensures a spatial resolution of 0.3 mm for frequencies > 1 THz.
TPX-D25.4-f10
Set of two mounted TPX lenses
> T2T-m - Theta-2-Theta angular scanning unit, manually operated
The incidence angle theta of the Theta-2-Theta reflection unit is manually set.
The reflection angle theta is automatically set equal to the incidence angle theta (specular reflection).
Needs fiber coupled antennas outside the spectrometer.
T2T-m
> T2T-a - Theta-2-Theta angular scanning unit, automatically operated
The reflection angle theta is automatically set equal to the incidence angle theta (specular reflection).
An automatic angular scan is possible using the spectrometer software T3DS.
Needs fiber coupled antennas outside the spectrometer.
T2T-a
Object: ruled Al grating
1 mm groove width
Angular scan for reflected beam
on ruled grating