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Dedicated spectrophotometer for localized transmittance and reflectance measurements

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Abstract

A dedicated spectrophotometer is built to achieve localized transmittance and reflectance measurements. The spatial resolution can be chosen from 100μm to 2 mm, the spectral resolution from 0.5  to 5  nm, and the spectral range from 400  to 1700  nm. This apparatus can be used to study the index and thickness uniformity on single layers to determine and optimize the characteristics of the deposition chamber. It can also be used to measure the spatial variations of optical properties of intended nonuniform coatings such as linear variable filters.

© 2006 Optical Society of America

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