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Experimental equipment

1. Terahertz spectrometer with reverse wave lamp.

Operational frequency range — 0.03ТHz – 1.45ТHz

Operational beam power — 1мW – 100мW

Measurable values — spectra

Complex bandwidth — Tr* = Treij

Reflection index — R

Refractive index — n* = n + ik

Dielectric permittivity — e* = e¢ + ie²

Conductivity — s* = s1 + is2

Magnetic susceptibility — m* = m¢ + im²

Dielectric loss angle — tgd

Absorption index — a

Twin beam refraction— Dn

Frequency resolution:

Relative — Dn/n ~ 10-4 – 10-5

Average absolute — 0.001см-1

Dynamic range — 40dB – 60dB

Signal-noise ratio — 104 – 106

Degree of polarization of working beam — 99.99%

Time to record a 100 point spectrum:

Amplitude range T(n) or R(n) — 10с – 20с

Phase spectrum j(n) — 20с – 40с

 

A description of the BWT spectrometer can be found in the following publications: 

B.P. Gorshunov, A.S. Prokhorov, I.E. Spektor, A.A. Volkov. Sub-spectroscopy of materials

with correlated electrons. News from Higher Education establishments (IvestiaVUZov).

Radiophysics (Radiofizika). XLVIII, page.926, 2005.

 

2. Time-domain Terahertz spectrometer – company Menlo

Operating frequency range 0.3 – 3.5 THz

System – ТHz imaging.

 

3.Infrared vacuum Fourier-spectrometer “Vertex 80v” – company Bruker.

Operating frequency range 10cm-1 – 16000cm-1

Infrared microscope HYPERION2000 with frequency range 500cm-1 – 16000cm-1

Linkam stagewith temperature range 196 – 6000С

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