Time-Domain Spectroscopy Platform

  • Versatile time-domain terahertz platform
  • Fiber-coupled InGaAs antennas 
  • Best signal quality, short measurement times
  • NEW: Peak dynamic range > 90 dB
  • NEW: High bandwidth > 5 THz

 

 

The TeraFlash, a table-top time-domain terahertz platform, sets new standards in terms of dynamic range, bandwidth and measurement speed. Owing to recent improvements in the 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.

 

See more in our product video:

Technical Information

Technical Information

 

Specifications:

Specifications TeraFlash
Components  
  • Femtosecond laser, SM/PM fiber delivery
  • 2 delay stages (stationary / moving)
  • 2 InGaAs photoconductive switches
  • electronics for data acquisition
  • laptop computer
 
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 #EK-000781, InGaAs/InP photoconductive switch with 100 µm strip-line antenna
Terahertz receiver #EK-000782, InGaAs/InP photoconductive switch with 25 µm dipole antenna, 10 µm gap
Antenna package Cylindrical, ∅ 25 mm
Integrated Si lens and SM/PM fiber pigtail (2.5 m)
Terahertz spectral range 0.1 - 5 THz
Average terahertz power (typ.) > 50 µW (60 µW typ.)
Peak dynamic range > 90 dB (95 dB typ.)
Delay stage Computer-controlled mechanical delay + fast voice coil
Scan range 20 .. 200 ps
Frequency resolution < 5 GHz @ 200 ps scan range
< 40 GHz @ 25 ps scan range
Acquisition rate Precise scan: 60 s/spectrum, 70 ps delay, 5 THz bandwidth, > 90 dB peak dynamic range, > 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. 35 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

 

 

TeraFlash spectrum, with >100 dB peak dynamic range.

 

Schematic diagram of the TeraFlash. Blue lines depict electric signals, red lines the optical signals.

Options & Related Products

Options & Related Products

Related Products

Technical Drawings

Technical Drawings

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Applications

Download

Download

Overview Article: Laser-based terahertz generation & applications
Overview Article: Laser-based terahertz generation & applications
toptica_lang_deninger_photonik_2012_15.pdf
Scientific Paper: Terahertz-time domain spectrometer with 90 dB peak dynamic range, Vieweg et al, J Infrared Milli Terahz Waves, 2014
Scientific Paper: Terahertz-time domain spectrometer with 90 dB peak dynamic range, Vieweg et al, J Infrared Milli Terahz Waves, 2014
toptica_vieweg_J_Infrared_Milli_Terahz_Waves_2014_09.pdf