Determination of detector rotation angle in the experiment based on the total internal reflection using an equilateral right angle prism

2015 ◽  
Author(s):  
Hendro ◽  
S. Viridi ◽  
Y. Pratama
Keyword(s):  
Total Internal Reflection ◽  
Rotation Angle ◽  
Internal Reflection

Attenuated Total Internal Reflection Infrared Mapping Microspectroscopy of Soft Materials

2000 ◽  
Vol 54 (2) ◽  
pp. 324-330 ◽  
Author(s):  
Lori L. Lewis ◽  
André J. Sommer
Keyword(s):  
Spatial Resolution ◽  
Total Internal Reflection ◽  
Soft Materials ◽  
Diffraction Limit ◽  
Internal Reflection ◽  
Attenuated Total Internal Reflection ◽  
Infrared Microspectroscopy ◽  
Soft Samples ◽  
Polymer Laminates

Attenuated total internal reflection (ATR) infrared mapping microspectroscopy of soft samples is reviewed and investigated by using cartridge-based germanium hemispheres. The study demonstrates the use of these devices for obtaining line scans or maps of soft pliable surfaces over an area of approximately 100 × 100 micrometers. An experimental determination of the spatial resolution by using a cross-sectioned polymer film showed a twofold improvement over transmission infrared microspectroscopy for sample sizes at the diffraction limit. Optical details of the devices are discussed in the context of ATR measurements in addition to their application for the study of polymer laminates often encountered in industry and forensics.

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