T-FIBER Real-Time Fiber Coupled Terahertz Spectrometer

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Features & Applications

FEATURES

  • Pump pulse fiber delivery
  • Real-time measurements
  • Unlimited lifetime of delay line
  • Flexible design
  • THz imaging capability
  • Complete PC control
  • User-friendly software
  • Excellent value for money

APPLICATIONS

  • Time-resolved broadband THz spectroscopy
  • Production processes monitoring
  • Hazardous substances detection
  • Paint and coatings layers thickness measurements
  • Food and agricultural products quality inspection
  • Medical imaging

Description

Fiber-coupled Terahertz Spectrometer T-FIBER, offered by TERAVIL, features flexible and robust design. It has integrated femtosecond fiber laser with two fiber output ports. Comparing to common Ti:Sapphire oscillators, fiber lasers are smaller, cheaper, more reliable and feature parameters that are perfect for terahertz generation.

Femtosecond laser, delay line and signal registration electronics are integrated in a single compact housing with footprint only 40×40 cm. Minimal set of free space optics used in spectrometer allows stable long time operation. Special “no bearing” design of fast delay line makes its lifetime practically unlimited. Delay line allows real time data acquisition with 10 spectra/s speed and 116 ps time window.

Fiber-coupled THz emitter and detector make switching between experiment geometries easier than before. Due to its compact size and reliability during transportation, T-FIBER spectrometer is dedicated for laboratory use as well as for real field applications. We are also happy to customize it according to special OEM customer requirements.

Basic setup of T-FIBER spectrometer includes optical rail, with fiber-coupled THz emitter, detector, two PE lenses and sample holder. This setup provides transmission geometry and it is extremely simple in alignment.

As an option goniometer stage can be supplied. This inexpensive module allows operation in multiple most common geometries, including transmission and tunable angle reflection from approx. 18.5° up to 90°. It also can be used for unique THz scattering experiments, because sample and detector angles can be changed independently. This module gives also better focusability of THz beam.

Specifications


Model T-FIBER basic version T-FIBER with goniometer
 
General specifications
Spectral range >3 THz >3.5 THz
Dynamic range >60 dB @ 0.4 THz >65 dB @ 0.4 THz
Acquisition rate 10 scans/s
Spectral resolution 8.6 GHz
Scan range 116 ps
Configurations Transmission Transmission/tunable angle reflection/scatterin
Incidence angles range (in reflection mode) - 18.5-90o
Detection angles (in scattering mode) - 18.5-241.5o
Computer interface USB
Dimensions 400 × 400 × 158 mm
Spectroscopy setup footprint 670 x 70 mm 450 x 300 mm
 
PUMP LASER
Pump laser LightWire FF50
Laser output type Fiber
Wavelength 1064 nm
Pulse duration <160 fs
Output power >40 mW
Pulse repetition rate 40 MHz

Drawings & Images


Sample area schematic layout (basic version)

Goniometer schematic layout: side view

Goniometer schematic layout: top view in reflection geometry

Goniometer schematic layout: top view in transmission geometry

Example of T-FIBER spectrometer, tailored to custom application

Example of T-FIBER spectrometer, tailored to custom application

Example of T-FIBER spectrometer, tailored to custom application

Example of T-FIBER spectrometer, tailored to custom application