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1
Content available Gorky’s Gyrotron Heroes
Pliński E. F.
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2020
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Vol. 68, nr 6
1257--1262
EN
This work presents an outline of the history of scientists and the city where the world’s first relativistic CRM device, known today as a Gyrotron, was created. CRM can be explained as “a microwave source of stimulated radiation based on the cyclotron resonance phenomenon.”. The story begins in 1898 with the establishment of the Emperor Nicolas II Warsaw Polytechnic Institute and ends in 1964 with the launch of the world’s first Gyrotron at the Nizhegorodsky Polytechnical Institute (later Gorky). The principle of gyrotron operation is very briefly presented in the paper, but mainly, according to the idea of this work, a lot of space is devoted to people, scientists and organizers of science in Gorky, the first who created this device, and therefore the work is limited to presenting the events related to the creation of the Gyrotron in 1959‒1967.
2
Content available The Microwave Sources for EPR Spectroscopy
Hruszowiec M., Nowak K., Szlachetko B., Grzelczak M., Czarczyński W., Pliński E. F., Więckowski T.
Journal of Telecommunications and Information Technology
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2017
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nr 2
18--25
EN
Rapid development of many scientific and technical disciplines, especially in material science and material engineering increases a demand for quick, accurate and cheap techniques of materials investigations. The EPR spectroscopy meets these requirements and it is used in many fields of science including biology, chemistry and physics. For proper work, the EPR spectrometer needs a microwave source, which are reviewed in this paper. Vacuum tubes as well as semiconductor generators are presented such as magnetron, klystron, traveling wave tube, backward wave oscillator, orotron, gyrotron, Gunn and IMPATT diodes. In this paper main advantages of gyrotron usage, such as stability and an increased spectral resolution in application to EPR spectroscopy is discussed. The most promising and reliable microwave source is suggested.
3
Content available Selected nonapeptides in terahertz light
Fuglewicz B., Pliński E. F., Jarząb P. P., Plińska S., Cebrat M., Nowak K., Augustyn L., Walczakowski M. J., Mikulics M., Pałka N., Szustakowski M.
Optica Applicata
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2014
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Vol. 44, nr 1
159--171
EN
Eight synthetic histidine analogues of oxytocin and vasopressin are subject of investigations. The spectra of the peptides have been investigated in the terahertz band. The results are obtained in the terahertz time-domain spectroscopy arrangement.
4
Content available Gyrotron Technology
Hruszowiec M., Czarczyński W., Pliński E. F., Więckowski T.
Journal of Telecommunications and Information Technology
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2014
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nr 1
68--76
EN
The article presents a microwave vacuum tube called gyrotron. Its applications, construction and principle of operation are briefly described. It is also discussed the issue of an appropriate electron beam generation and formation.
5
Content available remote Acoustic processes in RF excited CO2 laser plasma in pulse regime
Wojaczek D. A., Dobrucki A. B., Pliński E. F.
Optica Applicata
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2010
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Vol. 40, nr 1
143--153
6
Content available remote Acoustic mapping of the back-scattering interferometer signal in a CO2 laser
Wojaczek D. A., Chodorowski P., Dobrucki A. B., Witkowski J. S., Pliński E. F.
Optica Applicata
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2010
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Vol. 40, nr 4
909--919
EN
It is shown that a microphone placed in the laser plasma can be used for detection and observation of the optical phenomenon such as an optical feedback in a continuous wave regime of the laser operation. To observe the effect, a periodically moved external mirror has been used. The periodical changes of the optical beam intensity in the laser cavity generated changes in frequency and amplitude of the acoustic signal. In conclusion, the acoustic wave gives information about optical effects created in a waveguide CO2 laser.
7
Content available remote Thermodynamic and optical parameters of the RF pulse excited slab-waveguide CO2 laser
Wojaczek D. A., Pliński E. F., Witkowski J. S.
Optica Applicata
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2005
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Vol. 35, nr 2
215-224
EN
In the paper, changes of the optical and thermodynamic parameters, such as a refractive index, pressure, and temperature are investigated on an RF pulsed C02 slab-waveguide laser. Changes of the refractive index, and pressure are measured with a Mach-Zehnder interferometer, and microphone, respectively. A Gladstone-Dale formula is applied to calculate the changes of the temperature. It is shown how an acoustic wave in the laser cavity modifies the pressure of the laser medium in the course of the pulse duration. The results of measurements allow explaining a line hopping effect observed during the laser plasma pulse evolution.
8
Content available remote Thermal conductivity and temperature distribution in RF excited CO/sub 2/, CO, and Xe laser media.
Pliński E. F., Witkowski J. S.
Optica Applicata
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2001
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Vol. 31, nr 1
209-222
EN
Different methods of calculations of thermal conductivity of gas laser mixtures versus temperature are compared in the paper. Approximation functions describing the experimental data of thermal conductivity and viscosity of the chosen gases (CO/sub 2/, N/sub 2/, He, Xe, CO, O, Ar) are given. The formulas introduced and data obtained allow us to predict thermal conductivity and temperature distribution of a typical high power laser gas mixture. Examples of temperature distribution in RF excited CO/sub 2/, CO, and Xe laser media are shown. Knowledge of the temperature distribution in the laser cavity can be useful for predicting general optical properties of the laser.
9
Content available remote Spectral phenomena in CO/sub 2/ lasers. A review
Pliński E. F.
Optica Applicata
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2001
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Vol. 31, nr 3
509-544
EN
The rich spectrum of the CO/sub 2/ molecule is an appreciated advantage of lasers based on the carbon dioxide medium. On the other hand, that specific feature of the CO/sub 2/ molecule brings about many problems. Sometimes it can be a serious obstacle in designing laser devices. The paper gives an overview of the spectral properties of the radiation of different kinds of CO/sub 2/ lasers. Many examples of the spectral phenomena are presented on modern RF excited waveguide, multi-waveguide and slab-waveguide CO/sub 2/ lasers
10
Laserowa znakowarka wielopunktowa
Witkowski J. S., Pliński E. F., Abramski K. M.
Przegląd Mechaniczny
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1998
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nr 16
21-24
PL
W prezentowanym artykule zaproponowano zastosowanie do znakowania przedmiotów wiązki laserowej, z jednoczesnym pominięciem optycznego układu sterowania wiązką; do tego celu w opisanym modelu urządzenia wykorzystano wielokanałowy laser oraz laser falowodowo-szczelinowy ze specjalną selekcją zwaną selekcją Talbota.
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