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Experimental equipment

1. Terahertz spectrometer based on backward-wave oscillators.

Operational frequency range — 0.03 ТHz – 1.45 ТHzBWO

Operational beam power — 1mW – 100mW

Measurable values — spectra of:

Complex transmission coefficient — Tr* 

Reflection coefficient— R

Refractive index — n* = n + ik

Dielectric permittivity — epsilon* = epsilon1+i epsilon2

Conductivity — s* = s1 + is2

Magnetic susceptibility — mu* = mu1 + i mu2

Dielectric loss angle — tg delta

Absorption index — a

Frequency resolution:

Relative — Delta f/f ~ 10-4 – 10-5

Average absolute — 0.001 cm-1

Dynamic range — 40 dB – 60 dB

Signal-noise ratio — 104 – 106

Degree of polarization of working radiation— 99.99%

Time to record a 100 point spectrum:

Amplitude range T(f) or R(f) — 10s – 20s

Phase spectrum — 20s– 40s

 

A description of the BWO spectrometer can be found in: 


Menlo.jpg

2. Time-domain Terahertz spectrometer – company MenloSystems Tera K15





Bruker.jpg3. Infrared vacuum Fourier spectrometer Bruker Vertex 80v.

Microscope Hyperion 2000

 
TeraView.jpg
4. Terahertz puls time-domain spectrometer TeraView TPS Spectra 3000.

  • Measurement of transmission coefficient and dielectric parameters of plane parallel solid samples and liquids.
  • Spectral range 0.06 - 4 THz (2 cm-1 - 133 cm-1).
  • Dynamical range 80 dB.
  • Spectral resolution 0.2 cm-1
  • Temperature measurements 4 - 300 К.
  • Measurements in vacuum.







5. Fluorimeter Cary eclipse 600Флуориметр.jpg
  • Optical range 290 - 900 nm
  • Spectral resolution 0.2 nm
  • Scan speed 400 nm/sec
  • Thermostate cell 
  • Nitrogen cryostat 




TechCut.jpg
6. Precision low speed saw Allied TechCut4
  • 3-6" (75-150 mm) diameter blade range, 0.5" (12.7 mm) arbor hole
  • Variable speed with LED display: 10-500 RPM (10 RPM increments)
  • Cutting capacity: 2" (51 mm) thickness
  • Micrometer sample indexing, 1 µm resolution, 1" (25 mm) range



MultiPrep.jpg
7. Precision polishing system Allied MultiPrep

  • Dual axis, micrometer controlled angular positioning of the sample (pitch and roll): +10°/-2.5° range (0.02° increments)
  • Rear digital indicator to display vertical positioning (static) with zeroing function, 1 µm resolution
  • Automatic sample oscillation, adjustable sweep with 6 speeds




Пила.jpg
8. Wire saw model ws22
  • Maximum sample size 40 mm * 40 mm
  • Wire diameter 20 - 60 micron.
  • Wire oscillation frequency 300 movements/min

 

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