Transmission Spectra of Materials in the Terahertz Range Measured by a Hot Electron Bolometer-Based System

• Authors: N. Pałka , M. Walczakowski , P. Zagrajek , A. Czerwiński , M. Sypek , M. Szustakowski
• Languages of publication: EN

Abstracts

EN

This paper presents an optical system for transmission spectral measurements in the terahertz range. The source of radiation is a tunable solid-state laser, which generates a narrow-band nanosecond pulses in the range 0.67-2.68 THz and based on optical parametric oscillator phenomenon. The signal is detected with a fast and sensitive hot electron bolometer. Principle of generation and detection of pulses as well as methodology of measuring spectral characteristics are presented. We compared the results obtained with the free-space setup, which is based on the optical parametric oscillator and hot electron bolometer, with a purged time domain spectroscopy system in the range of 0.7-2.2 THz.

Keywords

EN

07.57.Ty; 78.20.Ci; 78.40.-q; 78.47.jg

Discipline

• 07.57.Ty: Infrared spectrometers, auxiliary equipment, and techniques
• 78.20.Ci: Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)
• 78.47.jg: Time resolved reflection spectroscopy
• 78.40.-q: Absorption and reflection spectra: visible and ultraviolet(for infrared spectra, see 78.30.-j; for optical spectra of superconductors, see 74.25.nd; for time resolved reflection spectroscopy, see 78.47.jg; for multiphoton absorption, see 79.20.Ws in impact phenomena)

• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 3
• Pages: 538-541

Dates

published

2013-09

Contributors

author

N. Pałka

• Military University of Technology, S. Kaliskiego 2, 00-908 Warszawa, Poland

author

M. Walczakowski

• Military University of Technology, S. Kaliskiego 2, 00-908 Warszawa, Poland

author

P. Zagrajek

• Military University of Technology, S. Kaliskiego 2, 00-908 Warszawa, Poland

author

A. Czerwiński

• Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

M. Sypek

• Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

M. Szustakowski

• Military University of Technology, S. Kaliskiego 2, 00-908 Warszawa, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.124.538