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首页> 外文期刊>Review of Scientific Instruments >Microspecular reflectance apparatus for use with Cary 14 or 17 series spectrophotometers
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Microspecular reflectance apparatus for use with Cary 14 or 17 series spectrophotometers

机译：与Cary 14或17系列分光光度计一起使用的微镜反射仪

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摘要

The design of an attachment for the Cary Instruments model 14 or 17 series spectrophotometers for the measurement of the polarized specular reflectance spectra of microsamples in the near uv, visible, and near ir is described. The attachment is easily interchangeable with standard sample handling accessories in the extended cell compartment of the instrument. When aligned, the apparatus focuses the beam on the sample at nominally normal incidence by means of Cassegrain optics. The reflected beam is passed by a series of mirrors to the standard Cary detector. The spectrophotometer is operated in the double beam absorbance mode. Comparison of the sample reflectance with that of a calibrated mirror measured under the same conditions allows the calculation of the absolute reflectivity of the sample, which can then be used to derive the absorptivity via a Kramers–Kronig relationship. The use of the apparatus to obtain polarized spectra of highly absorbing single crystals is discussed.
机译：描述了Cary Instruments的14或17型系列分光光度计附件的设计，该附件用于测量uv附近，可见光和ir附近的微样品的偏振镜反射光谱。该附件可轻松与仪器扩展单元格中的标准样品处理附件互换。对准后，该设备借助卡塞格林光学器件以名义上的法向入射将光束聚焦在样品上。反射光束通过一系列反射镜到达标准Cary检测器。分光光度计在双光束吸收模式下运行。将样品反射率与在相同条件下测量的校准镜的反射率进行比较，可以计算出样品的绝对反射率，然后可以将其用于通过Kramers-Kronig关系得出吸收率。讨论了使用该设备获得高吸收性单晶的偏振光谱的方法。

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