Calibration accuracy of laser calorimetry for common crystal geometries

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dc.identifier.uri Willer, Yannick Hao, Liu Balasa, Istvan Ristau, Detlev 2018-05-18T09:47:45Z 2018-05-18T09:47:45Z 2017
dc.identifier.citation Willer, Y.; Hao, L.; Balasa, I.; Ristau, D.: Calibration accuracy of laser calorimetry for common crystal geometries. In: Proceedings of SPIE 10447 (2017), 104471V-. DOI:
dc.description.abstract An established method for precise determination of optical absorption is the so called laser calorimetry. According to ISO 115511 laser calorimetry is preferred to other photothermal test methods, because of its capability to deliver absolute calibration. Many optical materials have low heat conductivity, which can affect the calibration significantly. The timeand spatial dependent temperature profile in a sample of materials with low heat conductivity requires accurate temperature measurement strategies to determine material-independent and absolutely calibrated absorption values. For thin cylindrical samples, ISO 11551 provides a strategy to compensate heat conductivity effects. The optimal temperature sensor position, where accordingly calibrated measurement results2 can be obtained, is simply based on the symmetric sample geometry. For thick geometries an additional temperature distribution along propagation direction of the heating beam must be considered. The current version of ISO 11551 does not provide a sophisticated solution for this problem, because the heating scheme of a sample is usually unknown. Therefore, a reliable calibration procedure can only be applied to samples of well-known absorption properties of surfaces and bulk material. Utilizing such kind of specifically prepared reference samples in combination with Finite Element Method (FEM) calculations, a general measurement and data evaluation concept based on laser calorimetry is presented, that allows deriving absolutely calibrated absorption measurement results for rectangular sample geometries. © 2017 SPIE. eng
dc.language.iso eng
dc.publisher Bellingham, WA : S P I E - International Society for Optical Engineering
dc.relation.ispartof 49th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials 2017, September 24-27, 2017, Boulder, Colorado, United States
dc.relation.ispartofseries Proceedings of SPIE 10447 (2017)
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
dc.subject absorption eng
dc.subject finite heat conductivity eng
dc.subject ISO11551 eng
dc.subject laser calorimetry eng
dc.subject laser optics eng
dc.subject nonlinear optics eng
dc.subject Absorption eng
dc.subject Calibration eng
dc.subject Calorimeters eng
dc.subject Calorimetry eng
dc.subject Finite element method eng
dc.subject Geometry eng
dc.subject Heat conduction eng
dc.subject Laser optics eng
dc.subject Light absorption eng
dc.subject Nonlinear optics eng
dc.subject Optical materials eng
dc.subject Temperature measurement eng
dc.subject Testing eng
dc.subject Thermal conductivity eng
dc.subject Absolute calibration eng
dc.subject Absorption measurements eng
dc.subject Calibration accuracy eng
dc.subject Calibration procedure eng
dc.subject ISO11551 eng
dc.subject Laser calorimetry eng
dc.subject Precise determinations eng
dc.subject Propagation direction eng
dc.subject Laser damage eng
dc.subject.ddc 530 | Physik ger
dc.title Calibration accuracy of laser calorimetry for common crystal geometries
dc.type article
dc.type Text
dc.type conferenceObject
dc.relation.issn 0277-786X
dc.bibliographicCitation.volume 10447
dc.bibliographicCitation.firstPage 104471V
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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