一种用于艺术品及其组成材料的拉曼光谱、激光诱导击穿光谱和激光诱导荧光光谱分析的新型紧凑型仪器。

A new compact instrument for Raman, laser-induced breakdown, and laser-induced fluorescence spectroscopy of works of art and their constituent materials.

作者信息

Osticioli I, Mendes N F C, Nevin A, Zoppi A, Lofrumento C, Becucci M, Castellucci E M

机构信息

Department of Chemistry, University of Florence, Polo Scientifico e Tecnologico, via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy.

出版信息

Rev Sci Instrum. 2009 Jul;80(7):076109. doi: 10.1063/1.3184102.

DOI:10.1063/1.3184102

PMID:19655994

Abstract

A small, potentially transportable prototype instrument capable of carrying out Raman, laser-induced breakdown (LIB), and laser-induced fluorescence (LIF) spectroscopy using a single pulsed laser source was developed for the analysis of cultural heritage objects. The purpose of this instrumentation is to perform fast and reliable analysis of surfaces with minimum damage to an object. For this purpose, a compact (51 x 203 x 76 mm) nanosecond Q-switched neodymium doped yttrium aluminum garnet laser (8 ns, 20 Hz, 0.01-115 mJ/pulse) was used as an irradiation source. The use of a nanosecond-gated detector sensitive between 180 and 900 nm allows the acquisition of elemental emissions in LIB spectroscopy and can also be employed for both LIF and time-resolved Raman spectroscopy. In this work, attention is focused on the description of the instrument and its optical components, and two examples of applications for the analysis of pigments and binding media used in works of art are presented.

摘要

为了对文化遗产进行分析，开发了一种小型、具有潜在便携性的原型仪器，该仪器能够使用单个脉冲激光源进行拉曼光谱、激光诱导击穿（LIB）光谱和激光诱导荧光（LIF）光谱分析。该仪器的目的是对物体表面进行快速可靠的分析，同时对物体造成最小的损害。为此，使用了一台紧凑的（51×203×76毫米）纳秒调Q掺钕钇铝石榴石激光器（8纳秒，20赫兹，0.01 - 115毫焦/脉冲）作为辐照源。使用在180至900纳米之间敏感的纳秒门控探测器，能够在LIB光谱中采集元素发射信号，也可用于LIF光谱和时间分辨拉曼光谱。在这项工作中，重点是对仪器及其光学组件的描述，并给出了两个用于分析艺术品中颜料和粘结介质的应用实例。