Optical and fast nondestructive identification of the ages of leaded ancient pottery

doi:10.1088/1674-1056/21/5/057803

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 57803-057803.doi: 10.1088/1674-1056/21/5/057803

Optical and fast nondestructive identification of the ages of leaded ancient pottery

吴方媛¹,杨湘波¹ ²

1. MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;
2. School of Physical Education & Sports Science, South China Normal University, Guangzhou 510631, China

收稿日期:2011-10-11 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10974061).

Optical and fast nondestructive identification of the ages of leaded ancient pottery

Wu Fang-Yuan (吴方媛)^a) and Yang Xiang-Bo(杨湘波)^a)b)^†

a. MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;
b. School of Physical Education & Sports Science, South China Normal University, Guangzhou 510631, China

Received:2011-10-11 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10974061).

摘要/Abstract

摘要： In this paper, based on the one-dimensional (1D) optical superlattice model, we calculate the average reflectivities (ARs) of leaded ancient pottery (AP) made within the last 2000 years, and find that for incident light with a suitable wavelength, the AR of the leaded AP increases monotonously with the increase in the layer number of the silvery glaze (SG) media. Based on this property, we propose an optical nondestructive method for identifying the age of leaded AP by detecting the AR. By using the exhaust algorithm and the discriminant function of variance, we obtain the optimal wavelength range of the incident light to identify the ages of the leaded AP. It is found that in the visible light band, if we choose green light with a wavelength range of 540--540.1 nm as the incident light, leaded AP made within the last 2000 years can be identified swiftly and precisely by detecting the ARs. This will be useful for designing optical instruments for the fast nondestructive identification of the ages of leaded AP.

关键词: optical superlattice, ancient pottery, nondestructive identification

Abstract: In this paper, based on the one-dimensional (1D) optical superlattice model, we calculate the average reflectivities (ARs) of leaded ancient pottery (AP) made within the last 2000 years, and find that for incident light with a suitable wavelength, the AR of the leaded AP increases monotonously with the increase in the layer number of the silvery glaze (SG) media. Based on this property, we propose an optical nondestructive method for identifying the age of leaded AP by detecting the AR. By using the exhaust algorithm and the discriminant function of variance, we obtain the optimal wavelength range of the incident light to identify the ages of the leaded AP. It is found that in the visible light band, if we choose green light with a wavelength range of 540--540.1 nm as the incident light, leaded AP made within the last 2000 years can be identified swiftly and precisely by detecting the ARs. This will be useful for designing optical instruments for the fast nondestructive identification of the ages of leaded AP.

Key words: optical superlattice, ancient pottery, nondestructive identification

中图分类号: (Multilayers; superlattices; photonic structures; metamaterials)

78.67.Pt

68.60.-p (Physical properties of thin films, nonelectronic) 42.25.Bs (Wave propagation, transmission and absorption)

吴方媛, 杨湘波. Optical and fast nondestructive identification of the ages of leaded ancient pottery[J]. 中国物理B, 2012, 21(5): 57803-057803.

Wu Fang-Yuan (吴方媛) and Yang Xiang-Bo(杨湘波) . Optical and fast nondestructive identification of the ages of leaded ancient pottery[J]. Chin. Phys. B, 2012, 21(5): 57803-057803.

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Optical and fast nondestructive identification of the ages of leaded ancient pottery

Optical and fast nondestructive identification of the ages of leaded ancient pottery

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