Subterahertz BWO spectroscopy: methods and devices

Spektor, I. E.; Anzin, V. B.; Goncharov, Yu. G.; Gorshunov, B.; Gusev, G. A.; Komandin, G. A.; Лебедев, С. П.; Волков, А. А.

doi:10.1109/icimw.2004.1422122

Cited by 2 publications

(1 citation statement)

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“…Figure 3(a) shows the fragment of the spectral dependences of the pyrodetector and the Golay cell response, measured on the BWO spectrometer. It can be seen that the both spectra have a pronounced linear character, which is associated with the linear emission spectrum of BWO (Grüner, 1998; Spektor et al , 2004). At certain frequencies, the radiation is practically absent, for example, in the range 760-830 GHz.…”

Section: Resultsmentioning

confidence: 90%

Sensitivity of the tetraaminodiphenyl based pyroelectric sensor from visible to sub-THz range

Паулиш¹,

Gusachenko

Morozov

et al. 2020

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Purpose The purpose of this paper is to study the spectral sensitivity characteristics of new pyroelectric sensor based on tetraaminodiphenyl film within the wavelength range of 0.4-10 µm and 300-3,000 µm. Design/methodology/approach Mylar film with the thickness of about 70 µm was used as the input window. The MDR-41 monochromator-based spectrometric complex and the quasi-optical spectrometer with the set of backward-wave oscillators were used for measurements of the pyrodetector spectral characteristics within the 0.4-10 µm and 300-3,000 µm ranges, respectively. Findings Mylar was found to have absorption lines within the range of 0.4-10 µm, which must be taken into account when broadband detectors developing. The noise equivalent power in the visible and infrared ranges was less than 6 × 10–10 W/Hz1/2, which is about five times lower than for analogue ones. In the sub-THz range, the pyrodetector sensitivity is 2-8 times higher than the Golay cell. The sensitivity of such pyrodetector weakly depends on the wavelength in the total measured range. Practical implications The pyroelectric sensor has good prospects for use in super wide spectral range, from ultraviolet to millimeter radiation, in spectrometers for scientific research, in industry for the operational control of THz radiation sources, as well as in security THz-systems. Originality/value The spectral sensitivity characteristics of the pyroelectric photosensor based on TADPh in the visible, infrared and terahertz ranges were measured. The prospects for the use of such sensors were determined.

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Section: Resultsmentioning

confidence: 90%