In spectroscopy, the quality of spectral data depends greatly on the incident beam that passes through the sample being analyzed. For samples analyzed at large angles of incidence (AOI), such as bandpass and edge filters (e.g., beam splitters), maintaining a high degree of beam collimation is necessary to achieve optimal results. This control is achieved by adjusting the incident beam using apertures within the spectrophotometer that can be customized to meet the specific requirements of the application.
In this work, an Agilent Cary 7000 UV-Vis-NIR spectrophotometer that includes the Agilent Cary Universal Measurement Accessory (UMA) was used. The degree of beam collimation was investigated using different apertures within the UMA to enhance data quality for the determination of the edge steepness of an optical filter.
Download the application note: Improving Spectral Quality Using Beam Collimation Control: Benefits of the Agilent Cary 7000 Universal Measurement Spectrophotometer with high f-number apertures for superior data quality and accuracy
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