Spectrally resolved laser calorimetric absorptance measurements

L. Jensen, I. Balasa, K. Starke, D. Ristau
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引用次数: 3

Abstract

So far, laser calorimetry (LCA) as absorptance measurement procedure according to ISO 11551 has been commonly performed at a variety of selected laser wavelengths. Thus, this procedure has been a valuable tool for optimization processes of dielectric coatings. For an even more comprehensive detection of any absorbing contribution in a dielectric layer stack a free selectable test wavelength gives more detailed insights in optics characterization. According to this approach an OPO system was implemented in a laser calorimetric test bench. By this, a tunable laser source with sufficient laser power is available to conduct calorimetric absorptance measurements. Results of detailed investigations of the contribution of the material constituents of a dielectric optical component are presented in this paper.
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光谱分辨激光量热吸收测量
到目前为止,激光量热法(LCA)作为根据ISO 11551的吸收率测量程序,通常在各种选定的激光波长下进行。因此,该方法已成为优化介质涂层工艺的一个有价值的工具。为了更全面地检测介电层堆栈中的任何吸收贡献,自由选择的测试波长提供了光学表征的更详细见解。根据该方法,在激光量热试验台上实现了OPO系统。通过这种方法,具有足够激光功率的可调谐激光源可用于进行热吸收测量。本文详细研究了介质光学元件中材料成分的贡献。
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