Items related to Optical Materials Characterization

Optical Materials Characterization - Softcover

Albert Feldman

 
9780428532901: Optical Materials Characterization

Synopsis

Excerpt from Optical Materials Characterization<br/><br/>Several techniques are used for measuring the refractive indices of optical materials; however, as part of this program, the measurements of n have been conducted on two precision spectrometers by the method of minimum deviation Schematic diagrams of both spectro meters are shown in Figure 1. The first spectrometer, which contains glass optics, is capable of measuring n in the Visible and in the near infrared to an accuracy of several parts in 106. The second spectrometer, which contains mirror optics, is capable of measuring n grom 200 nm in the ultraviolet to 50 um in the infrared to an accuracy of several parts in 10 The accuracy depends on specimen quality and size. All values of refractive index are measured relative to the refractive index of air, na, that is we measure n/na The value of na is about over the full wavelength range of measurement.

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