Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Pulsed inductive CO2 laser with radio-frequency excitation and influence of the H2 content on the efficiency and lasing temporal characteristics. / Razhev, A. M.; Kargapoltsev, E. S.; Churkin, D. S. и др.
в: Laser Physics, Том 33, № 1, 015002, 01.01.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Pulsed inductive CO2 laser with radio-frequency excitation and influence of the H2 content on the efficiency and lasing temporal characteristics
AU - Razhev, A. M.
AU - Kargapoltsev, E. S.
AU - Churkin, D. S.
AU - Trunov, I. A.
N1 - Funding Information: The author’s team would like to thank I V Sherstov, an employee of the Quantum Optical Technologies Laboratory of the Interdisciplinary Quantum Center, Novosibirsk State University, for the provision of the VIGO IR detector of pulsed optical signals and the cooled photo-resistor. Funding Information: The research was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (theme No. 121033100059-5). Publisher Copyright: © 2022 Astro Ltd.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - In 2021, data on the effective pulsed gas discharge inductive CO2 laser with radio-frequency (RF) excitation were published with a pulse output energy of E∼ 1 J (the efficiency η∼ 14.5%) on the gas mixture He:N2:CO2 = 8:2:1. The efficiency of the developed CO2 laser had exceeded the value η∼ 21% at E∼ 350 mJ. At the beginning of 2022, it was shown that xenon addition (Xe = 4%) to the gas mixture made it possible to achieve an efficiency of η∼ 27% at an output energy of E∼ 600 mJ. For the first time, the effect of hydrogen additives in the active medium (He:N2:CO2:H2 and N2:CO2:H2 gas mixtures) was investigated for a pulsed inductive CO2 laser with RF excitation depending on the RF-pumping pulse duration value (τ), which allows the energy and temporal radiation characteristics of the laser to be controlled over a wider range. In addition to those already published, new experimental data have been obtained, namely the output beam profile of the inductive CO2 laser based on He:N2:CO2 = 8:2:1 gas mixture depending on the τ value. The new data will improve our understanding of inductive CO2 laser physics and of the plasma-chemical processes occurring in its active medium. RF current pulses propagated along inductor wires and, thus, an inductive discharge was formed to create a population inversion by IR transitions of CO2* molecules.
AB - In 2021, data on the effective pulsed gas discharge inductive CO2 laser with radio-frequency (RF) excitation were published with a pulse output energy of E∼ 1 J (the efficiency η∼ 14.5%) on the gas mixture He:N2:CO2 = 8:2:1. The efficiency of the developed CO2 laser had exceeded the value η∼ 21% at E∼ 350 mJ. At the beginning of 2022, it was shown that xenon addition (Xe = 4%) to the gas mixture made it possible to achieve an efficiency of η∼ 27% at an output energy of E∼ 600 mJ. For the first time, the effect of hydrogen additives in the active medium (He:N2:CO2:H2 and N2:CO2:H2 gas mixtures) was investigated for a pulsed inductive CO2 laser with RF excitation depending on the RF-pumping pulse duration value (τ), which allows the energy and temporal radiation characteristics of the laser to be controlled over a wider range. In addition to those already published, new experimental data have been obtained, namely the output beam profile of the inductive CO2 laser based on He:N2:CO2 = 8:2:1 gas mixture depending on the τ value. The new data will improve our understanding of inductive CO2 laser physics and of the plasma-chemical processes occurring in its active medium. RF current pulses propagated along inductor wires and, thus, an inductive discharge was formed to create a population inversion by IR transitions of CO2* molecules.
KW - free running mode
KW - H additives
KW - inductive CO laser
KW - laser beam divergence
KW - pulse duration
KW - pulsed inductive discharge
KW - ‘full mirror’ resonator
UR - http://www.scopus.com/inward/record.url?scp=85144024796&partnerID=8YFLogxK
UR - https://www.elibrary.ru/item.asp?id=50204714
U2 - 10.1088/1555-6611/aca291
DO - 10.1088/1555-6611/aca291
M3 - Article
AN - SCOPUS:85144024796
VL - 33
JO - Laser Physics
JF - Laser Physics
SN - 1054-660X
IS - 1
M1 - 015002
ER -
ID: 41211044