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Titolo:
Atmospheric thermal lens induced by high-power CO2 laser beams in laser materials processing
Autore:
Wang, ZY; Chen, K; Chen, T; Lei, H; Zuo, TC;
Indirizzi:
Beijing Polytech Univ, Natl Ctr Laser Technol, Coll Laser Engn, Beijing 100022, Peoples R China Beijing Polytech Univ Beijing Peoples R China 100022 22, Peoples R China
Titolo Testata:
IEEE JOURNAL OF QUANTUM ELECTRONICS
fascicolo: 2, volume: 37, anno: 2001,
pagine: 218 - 223
SICI:
0018-9197(200102)37:2<218:ATLIBH>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLID-STATE LASERS; PROPAGATION;
Keywords:
atmospheric thermal lens; high-power CO2 laser beams; laser materials processing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, ZY Beijing Polytech Univ, Natl Ctr Laser Technol, Coll Laser Engn, Beijing 100022, Peoples R China Beijing Polytech Univ Beijing Peoples R China 100022 es R China
Citazione:
Z.Y. Wang et al., "Atmospheric thermal lens induced by high-power CO2 laser beams in laser materials processing", IEEE J Q EL, 37(2), 2001, pp. 218-223

Abstract

The atmospheric thermal lens induced by high-power CO2 laser beams in laser materials processing and its influence on beam propagation and focus are studied in this paper. It is found in experiments that the atmospheric thermal lens is generated when the air in the beam propagation path is stationary. But it can be eliminated by blowing air with a certain pressure into the beam's guidance system. Also, the behavior of the beam's propagation under the case of the thermal lens deviates from Gaussian theory. This deviation is calculated by the linear and nonlinear models of the atmospheric thermal lens under the conditions of a large beam diameter and high power intensity. In addition, the influence of the thermal lens on the beam's focus size and position is also discussed in this paper.

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Documento generato il 29/03/20 alle ore 15:00:34