Surface temperature evolution in pulsed laser action of millisecond range

被引：8

作者：

Doubenskaia, M. ^{[1
]}

Smurov, I. ^{[1
]}

机构：

[1] ENISE, DIPI Lab, F-42023 St Etienne, France

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 13期

关键词：

surface temperature measurements; multi-wavelength pyrometry; laser pulse shape; melting; solidification;

D O I：

10.1016/j.apsusc.2005.07.164

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An originally developed multi-wavelength pyrometer (12 wavelengths in the range 1.001-1.573 mu m, 50 mu s acquisition time for each photodiode, 800 mu m spatial resolution, 900-3500 degrees C brightness temperature range) is used to measure brightness temperature under the pulsed action of Nd:YAG laser (HAAS-HL62P) on stainless steel (INOX 304L) substrates. Specially developed "notch" filters (10(-6) transparency at 1.06 mu m wavelength) are applied to avoid the influence of laser radiation on temperature measurements. The true temperature is restored on the basis of method of multi-colour pyrometry. The accuracy of brightness temperature measurements is examined by comparing the temperature evolution for pulses with different durations but with the same value of energy density flux. The influence of the following parameters is studied keeping the remaining ones constant: pulse duration (6-20 ms, rectangular pulse shape), energy per pulse (10-33 J, rectangular pulse shape), pulse shape (three types of triangulars and one rectangular). Finally the evolution of surface temperature for pulses with more complex shapes but with the same pulse duration and energy per pulse is compared. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：4472 / 4476

页数：5

共 18 条

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