EFFECT OF LASER ENERGY AND ATMOSPHERE ON THE EMISSION CHARACTERISTICS OF LASER-INDUCED PLASMAS

被引：95

作者：

KUZUYA, M

MATSUMOTO, H

TAKECHI, H

MIKAMI, O

机构：

[1] Department of Electronic Engineering, College of Engineering, Chubu University, Kasugai-shi, Aichi 487

来源：

APPLIED SPECTROSCOPY | 1993年 / 47卷 / 10期

关键词：

LASER-INDUCED PLASMA; LASER ENERGY; ATMOSPHERE; EMISSION INTENSITY; BACKGROUND; LINE-TO-BACKGROUND RATIO;

D O I：

10.1366/0003702934334804

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The effects of laser energy and atmosphere on the emission characteristics of laser-induced plasmas were studied with the use of a Q-switched Nd:YAG laser over a laser energy range of 20 to 95 mJ. Argon, helium, and air were used as surrounding atmospheres, and the pressures were changed from atmospheric pressure to 1 Torr. The experimental results showed that the maximum spectral intensity was obtained in argon at around 200 Torr at a high laser energy of 95 mJ, whereas the line-to-background ratio was maximized in helium at around 40 Torr at a low energy of 20 mJ. The results are discussed briefly on the basis of the temporal and spatial observations of the laser-induced plasmas.

引用

页码：1659 / 1664

页数：6

共 17 条

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