TeraFlash
Versatile time-domain terahertz platform
• Peak dynamic range > 90 dB
• High bandwidth > 5 THz
• Fiber-coupled InGaAs antennas
• Best signal quality, short measurement times
The TeraFlash, a table-top time-domain terahertz platform, sets new standards in terms of dynamic range, bandwidth and measurement speed. Owing to an advanced laser and antenna design, the system achieves a unique peak dynamic range of more than 90 dB, and a bandwidth of more than 5 THz. The unit combines mature 1.5 µm laser technology, a highly precise mechanical delay stage, and fiber-pigtailed InGaAs antennas.
Applications
• Plastic Inspection
• Paint and coating layers
• Paper quality control
• Hydration monitoring
• Communication
• Ultrafast dynamics
• Gas sensing
• Fundamental physics
Specifications
Specifications
TeraFlash Components
Femtosecond laser, SM/PM fiber delivery
2 delay stages (stationary / moving)
2 InGaAs photoconductive switches
Electronics for data acquisition
Laser
FemtoFErb THz FD 6.5
Laser wavelength
1560 nm
Laser pulse width
< 60 fs (< 45 fs typ.)
Laser repetition rate
100 MHz
Fiber delivery
Included
Terahertz emitter
InGaAs/InP photoconductive switch with 100 µm strip-line antenna
#EK-000979: fiber length = 0.3 m
#EK-000781: fiber length = 1.0 m
#EK-000978: fiber length = 2.5 mTerahertz receiver
InGaAs/InP photoconductive switch with 25 µm dipole antenna, 10 µm gap
#EK-000981: fiber length = 0.3 m
#EK-000782: fiber length = 1.0 m
#EK-000980: fiber length = 2.5 mAntenna package
Cylindrical, ∅ 25 mm, integrated Si lens and SM/PM fiber pigtail
Terahertz spectral range
0.1 - 5 THz
Average terahertz power (typ.)
30 µW
Peak dynamic range
> 90 dB
Delay stage
Computer-controlled mechanical delay + fast voice coil
Scan range
20 .. 200 ps
Frequency resolution
< 5 GHz @ 200 ps scan range
< 50 GHz @ 20 ps scan rangeAcquisition rate
Precise scan: 60 s/spectrum, 70 ps delay, 5 THz bandwidth, > 90 dB peak dynamic range
Fast scan: 50 ms/spectrum, 50 ps delay, 3 THz bandwidth, peak dynamic range > 60 dB
Intermediate settings possible
Maximum measurement speed
Max. 40 traces/sec (50 traces/sec upon request), 20 ps delay
Useable terahertz path length
15 .. 110 cm, adjustable via stationary delay
Computer interface
Ethernet
Computer software
Labview-based GUI, included
Size ( H x W x D)
180 x 450 x 560 mm