Autor: Bielecki, Z. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nitrogen Oxides Optoelectronic Sensors Operating in Infrared Range of Wavelengths
Autorzy:: Wojtas, J.
Bielecki, Z.
Stacewicz, T.
Mikolajczyk, J.
Rutecka, B.
Medrzycki, R.
Powiązania:: https://bibliotekanauki.pl/articles/1399410.pdf
Data publikacji:: 2013-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 07.07.Df
42.25.Dd
42.55.Px
42.60.Da
42.62.Fi
85.60.-q
Opis:: Investigation of nitric oxide and nitrous oxide optoelectronic sensors is described. The detection of both components was done by measurement of absorption that occurs due to transition between vibronic molecular transitions. The improvement of the sensitivity was achieved due to application of cavity enhanced absorption spectroscopy. Two optical cavities (each one for each gas) built of high reflectance spherical mirrors were used. While the spectra of observed transitions are situated in mid-infrared range, two single mode quantum cascade lasers were applied. Their narrow emission lines were precisely tuned to the absorption lines of both investigated gases. The measurement of different mixtures of $Ar-NO$ and $Ar-N_2O$ within the range from 100 ppb to 10 ppm was performed. The relative uncertainty of the results did not exceed the level of 13%.
Źródło:: Acta Physica Polonica A; 2013, 124, 3; 592-594
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Application of Quantum Cascade Lasers in Nitric Oxide and Nitrous Oxide Detection
Autorzy:: Wojtas, J.
Bielecki, Z.
Stacewicz, T.
Mikolajczyk, J.
Medrzycki, R.
Rutecka, B.
Powiązania:: https://bibliotekanauki.pl/articles/1493346.pdf
Data publikacji:: 2011-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 07.07.Df
42.25.Dd
42.55.Px
42.60.Da
42.62.Fi
Opis:: Application of quantum cascade lasers in NO and $N_2O$ sensor is described. Cavity enhanced absorption spectroscopy was used for this purpose. The detection was performed at vibronic molecular transitions in spectral regions of 5.23-5.29 μm and 4.46-4.54 μm for NO and $N_2O$, respectively. In order to avoid interferences by the gases contained in atmosphere $(H_2O, CO_2)$ the lines of 5.263 μm for NO and 4.530 μm for $N_2O$ were selected. Our two channel sensor is designated for simultaneous detection of both compounds. Each channel consists of single mode quantum cascade laser, optical cavity, and a photodetection module. The lasers were precisely tuned to the wavelength of interest. Optical cavities were built with spherical mirrors of high reflectance. The signals from the cavities outputs were registered with specially developed low noise detection modules.
Źródło:: Acta Physica Polonica A; 2011, 120, 4; 794-797
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Laboratory System for Quantum Cascade Lasers Researching
Autorzy:: Mikołajczyk, J.
Pichola, W.
Wojtas, J.
Mamajek, M.
Garlińska, M.
Prokopiuk, A.
Bielecki, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1399386.pdf
Data publikacji:: 2013-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 85.60.Bt
85.60.Jb
42.55.Px
42.72.Ai
Opis:: The paper presents a prototype of a driving system designed to laboratory investigations of quantum cascade lasers. Significant requirements of these lasers operation, as well as a construction of the main components of the system were analyzed. During the performed investigations, a tuning range of both current pulses and temperature control operation were determined. Additionally the method of monitoring both current and voltage of the lasers was also described. As a summary, results of laboratory studies of the system with the use of commercial quantum cascade lasers were presented.
Źródło:: Acta Physica Polonica A; 2013, 124, 3; 505-508
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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