| http://www.w3.org/ns/prov#value | - It should also be understood that although lens 28 and polarizers 39 a and 39 b are shown, additional polarizers, lenses, or other optical elements may be provided as are known in the art for THz systems generally. [0054] In addition, the portion of the system 10 after semiconductor wafer 30 is not limited only to the configuration depicted in FIG. 1.
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