Terahertz-infrared ellipsometer system, and method of use

摘要

A dual scanning and FTIR system for application in the Terahertz and broadband blackbody frequency range including sources for providing Thz and broadband blackbody range and electromagnetic radiation, at least one detector of electromagnetic radiation in the THZ and broadband blackbody ranges, and at least one rotating element between the source and detector.

主权项

1. A dual THZ and IR scanning system for investigating samples in the Terahertz and Infrared frequency range, comprising:
a source for providing THZ range electromagnetic radiation; and an FTIR source for providing generally broadband blackbody range infrared electromagnetic radiation in functional combination with an FTIR modulating system;said dual THZ and IR scanning system further comprising at least one detector of electromagnetic radiation provided by said THZ and/or FTIR source;said dual THZ and IR scanning system further comprising at least one selection from the group consisting of:
a rotating polarizer between said source and said sample supporting stage; a rotating analyzer between said sample supporting stage and said detector; a rotating compensator between said source and said sample supporting stage; a rotating compensator between said sample supporting stage and said detector; a stokes vector selector between said source and said sample supporting stage; a stokes vector selector between said sample supporting stage and said detector;and a sample supporting stage with reflection and/or transmission capability between a source and said detector;such that in use a beam of electromagnetic radiation is provided by said source for providing Thz range electromagnetic radiation or said FTIR source for providing generally broadband blackbody range electromagnetic radiation in functional combination with an FTIR modulating system, which beam is is caused to be scanned through a range of frequencies onto said a sample placed on said sample supporting stage such that it interacts with said sample, while also passing through said at least one selected rotating polarizer, analyzer, compensator or stokes vector selector, and then enter said detector.