TERA K15
Versatile, All-fiber THz Time-Domain Platform Based on
1560 nm Femtosecond Fiber Laser
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 aquisition 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 THzTDS with optical sample excitation at those wavelengths, the TERA K15 setup can be upgraded with our THz-Pump-Probe add-on.
KEY SPECIFICATIONS
■ >6 THz Bandwidth
■ >95 dB Dynamic Range
■ Scan Range >850 ps
■ Spectral Resolution <1.2 GHz
■ Additional 780 nm Laser Ouput
■ Modular, Breadboard-based THz-TDS Platform
FEATURES
■ Broadband THz Spectroscopy
■ Simultaneous Operation of THz setup and fs Laser
■ Turnkey Operation
■ Supports Stand-Alone fs Laser Applications
■ All-fiber Flexibility
APPLICATIONS
■ Testbed for THz Components
■ Characterization of Solid State THz Sources
■ Investigation of Charge Carrier Dynamics
■ Characterization of Quantum Cascade Lasers
■ THz Plasmonics
■ Investigation of Synchrotron Radiation
THz Specifications
| Spectral Range | >6 THz |
| Dynamic Range | >95 dB |
| Total Scan Range | >850 ps (Long range variant: >1600 ps) |
| THz Frequency Resolution | <1.2 GHz (High resolution variant: <0.7 GHz |
| Laser Output Ports for THz* | 2 fiber-coupled ports, 1560 nm, FC/APC, PM fiber, <90 fs after 2.5 m patch cord |
| Laser System Repetition Rate | 100 MHz*, synchronizable to external source on request |
*Optional multichannel extension (up to 4 laser ports).
Optical Output Specifications(Optional)
Wavelength1560 nm780 nmAverage Output Power>500 mW>250 mW **Pulse Duration<90 fs<100 fsAuxiliary Output PortsFree space port, fiber-coupled port on request Free space port
** Menlo Systems’ C-Fiber 780: freely tunable power ratio between 780 nm and 1560 nm port
SYSTEM DIMENSIONS AND WEIGHT
| Optomechanical Setup | 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 |
SYSTEM COMPONENTS
| Optical Components | Femtosecond laser source: C-Fiber or C-Fiber 780 Fiber-coupled optomechanical delay line Fiber-coupled THz emitter and receiver modules TERA15-FC Compact THz optics with parabolic mirrors |
| Control Electronics | Transimpedance amplifier PC and software package for measurement and data analysis TCP socket remote control interface 19” screen, keyboard and mouse |
| Laser Control Unit |
OPTIONS
■ Dual-Detection/Multi-Channel Suitable for parallel transmission and reflection measurements
■ TERA Image Hyperspectral Imaging & Analysis Platform
■ THz Pump-Probe Second Delay Line for Optical Pump – THz Probe Spectroscopy
■ High Resolution Spectral Resolution of <0.7 GHz and >1600 ps Scan Window
■ SYNC Synchronizable Menlo Oscillator, suit- able for ASOPS-Upgrade or Optical Pump – THz Probe measurements
■ Reflection Head Compact Sensor Unit with Integrated THz optics
■ TeraLyzer Advanced Software for THz Data Analysis
■ Polymer Lens Optics
■ Custom Fiber Length
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