Title :
Terahertz-elasticity measurements on elastomers
Author :
Pfleger, Michael ; Puhringer, Harald ; Katletz, Stefan
Author_Institution :
Res. Center for Non Destruct. Testing GmbH, Linz, Austria
Abstract :
The optical parameters (refractive index, absorption coefficient) of opaque dielectric materials can be measured with terahertz (THz) Time-Domain spectroscopy (TDS). By using a THz beam of known polarization and measuring both components of the transmitted THz field, it is possible to determine the birefringence present in an anisotropic material. In this work we used polarization sensitive (PS) TDS to determine the strain-induced birefringence in stretched elastomers.
Keywords :
birefringence; dielectric materials; dielectric measurement; elasticity; elastomers; light absorption; light polarisation; light transmission; mechanical variables measurement; optical materials; refractive index measurement; submillimetre wave measurement; PS; THz TDS; THz beam; absorption coefficient; anisotropic material; opaque dielectric material measurement; optical parameter; polarization; polarization sensitive; refractive index; strain-induced birefringence; stretched elastomer; terahertz time-domain spectroscopy; terahertz-elasticity measurement; transmitted THz field measurement; Dielectric measurement; Force; Optical materials; Refractive index; Spectroscopy; Stress;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956129
