Cleaning processes of encrusted marbles by Nd:YAG lasers operating in free-running and Q-switching regimes

被引：69
|
作者：
Siano, S
Margheri, F
Pini, R
Mazzinghi, P
Salimbeni, R
机构：
[1] Istituto di Elettronica Quantistica, Consiglio Nazionale delle Ricerche, Firenze, I-50127
来源：
APPLIED OPTICS | 1997年 / 36卷 / 27期
关键词：
laser applications; laser cleaning; Nd:YAG; stone restoration;
D O I：
10.1364/AO.36.007073
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The removal process of degraded superficial layers from marble samples by Nd:YAG lasers was studied while simulating operative conditions of stone artwork restoration. The effects of laser irradiation at 1064 nm with three different pulse durations of 6 ns, 20 mu s, and 200 mu s were investigated by time-resolved shadowgraphy and emission spectroscopy of the ejection plume to characterize the specific interaction regimes, with particular concern given to the occurrence of side effects, such as thermal and mechanical damages to the substrate, that could affect the laser cleaning procedure. (C) 1997 Optical Society of America.
引用
收藏
页码：7073 / 7079
页数：7
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