Records |
Author |
Bogaerts, A.; Grozeva, M. |
Title |
Effect of helium/argon gas ratio in a He-Ar-Cu+ IR hollow-cathode discharge laser : modeling study and comparison with experiments |
Type |
A1 Journal article |
Year |
2003 |
Publication |
Applied physics B : lasers and optics |
Abbreviated Journal |
Appl Phys B-Lasers O |
Volume |
76 |
Issue |
3 |
Pages |
299-306 |
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
The He-Ar-Cu+ IR laser operates in a hollow-cathode discharge, typically in a mixture of helium with a few-% Ar. The population inversion of the Cu+ ion levels, responsible for laser action, is attributed to asymmetric charge transfer between He+ ions and sputtered Cu atoms. The Ar gas is added to promote sputtering of the Cu cathode. In this paper, a hybrid modeling network consisting of several different models for the various plasma species present in a He-Ar-Cu hollow-cathode discharge is applied to investigate the effect of Ar concentration in the gas mixture on the discharge behavior, and to find the optimum He/Ar gas ratio for laser operation. It is found that the densities of electrons, Ar+ ions, Ar-m* metastable atoms, sputtered Cu atoms and Cu+ ions increase upon the addition of more Ar gas, whereas the densities of He+ ions, He-2(+) ions and He-m* metastable atoms drop considerably. The product of the calculated Cu atom and He+ ion densities, which determines the production rate of the upper laser levels, and hence probably also the laser output power, is found to reach a maximum around 1-5% Ar addition. This calculation result is compared to experimental measurements, and reasonable agreement has been reached. |
Address |
|
Corporate Author |
|
Thesis ![sorted by Thesis field, ascending order (up)](img/sort_asc.gif) |
|
Publisher |
|
Place of Publication |
Berlin |
Editor |
|
Language |
|
Wos |
000182758000017 |
Publication Date |
2004-03-19 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0946-2171;1432-0649; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
1.696 |
Times cited |
6 |
Open Access |
|
Notes |
|
Approved |
Most recent IF: 1.696; 2003 IF: 2.012 |
Call Number |
UA @ lucian @ c:irua:104125 |
Serial |
812 |
Permanent link to this record |
|
|
|
Author |
Kukhlevsky, S.V.; Mechler, M.; Samek, O.; Janssens, K. |
Title |
Analytical model of the enhanced light transmission through subwavelength metal slits: Green's function formalism versus Rayleigh's expansion |
Type |
A1 Journal article |
Year |
2006 |
Publication |
Applied physics B : lasers and optics |
Abbreviated Journal |
Appl Phys B-Lasers O |
Volume |
84 |
Issue |
1/2 |
Pages |
19-24 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
|
Address |
|
Corporate Author |
|
Thesis ![sorted by Thesis field, ascending order (up)](img/sort_asc.gif) |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000238828700004 |
Publication Date |
2006-05-30 |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0946-2171 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
1.696 |
Times cited |
7 |
Open Access |
|
Notes |
|
Approved |
Most recent IF: 1.696; 2006 IF: 2.023 |
Call Number |
UA @ admin @ c:irua:59635 |
Serial |
5472 |
Permanent link to this record |