TeraSpeed
Superfast Terahertz Screening Platform
• Extremely fast measurements of terahertz pulse intensities (patent pending)
• Photoconductive terahertz emitter + high-bandwidth Schottky receiver
• Digital output: Data rates up to 500 kS/s, “snapshot” and “continuous” measurement modes
• Analog output: Detection of individual terahertz pulses @ 100 MHz repetition rate
• Robust setup without any delay stages or mechanically sensitive components
The TeraSpeed serves applications in quality control and process monitoring that require no spectral information, but call for terahertz intensity measurements at “extreme” speeds: the system is capable of detecting individual terahertz pulses at repetition rates as high as 100 MHz. An integrated data-processing unit converts the detected pulses to RMS values, enabling data streams at sampling rates up to 500 kHz – orders of magnitude faster than conventional terahertz systems. Bringing together several cutting-edge technologies, the TeraSpeed takes advantage of mature fiber laser technology, powerful photoconductive emitters and fast yet sensitive Schottky receivers.
Applications
• Industrial quality control • Hydration monitoring • Ultrafast dynamics • Security
Specifications
Components
Femtosecond laser, SM/PM fiber delivery
TX: InGaAs photoconductive switch
RX:High-bandwidth Schottky receiver
Data acquisition unit with USB interfaceLaser
FemtoFErb THz FD6.5
Laser wavelength
1560 nm
Laser pulse width
< 60 fs (< 45 fs typ.)
Laser repetition rate
100 MHz, clock output available
Laser outputs
2 x 20 mW ("Emitter fiber out", "Aux fiber out")
Terahertz emitter
#EK-000978, InGaAs/InP photoconductive switch
Terahertz receiver
#EK-000961, high-bandwidth Schottky diode
Average terahertz power
Typ. 30 µW
Analog outputs
• “Raw signal out”: Direct signal of Schottky receiver, 100 MHz repetition rate
• “RMS signal out”: Processed signals of RF-to-RMS converter, 100 kHz bandwidthDynamic range @ RMS signal output
Typ. 40 dB
Digital output
USB interface
Measurement modes of digital output
• “Snapshot”: Single-shot measurement, up to 100000 data points, sampling rate max. 500 kHz
• “Continuous”: Continuous data streaming, sampling rate 1 kHz .. 500 kHzTrigger input/output
• Input trigger for acquisition start in “snapshot” mode
• “Laser clock out”: Clock output of FemtoFErb laser, 100 MHz repetition rateControl software
Graphical user interface, included
Size (H x W x D)
90 x 450 x 500 mm; 110 x 450 x 545 mm with handles and feet