Patent ID: 7099006

Claim:
A spectroscopic ellipsometer system comprising: a source of polychromatic electromagnetic radiation (ZQTH); input means (ZINPUT) comprising: optical fiber (ZOF); coupler (ZSMA); colimating lens (ZCL); beam directing mirror (ZM) or beam chromatic shifting and directing means (ZCM); polarizer (ZP 1 ); first rotatable compensator (ZC 1 ); sample supporting stage; output means (ZOUTPUT) comprising: second rotatable compensator (ZC 2 ); analyzer (ZP 2 ); beam directing mirror (ZM) or beam chromatic shifting and directing means (ZCM); focusing lens (ZFL); spectrometer (ZSPEC); such that in operation the Source of electromagnetic radiation (ZQTH) provides spectroscopic electromagnetic radiation to one end of said optical fiber (ZOF), a second end thereof being secured in coupler (ZSMA), and a beam of electromagnetic energy exiting said coupler (ZSMA) is collimated by colimating lens (ZCL) and directed toward beam directing mirror (ZM) or beam chromatic shifting and directing means (ZCM), from which it reflects, said reflected beam being caused to pass through polarizer (ZP 1 ) and the first rotatable compensator (ZC 1 ) before being caused to impinge upon a sample (ZS) which is held in position by said sample supporting stage, electromagnetic radiation which reflects from said sample (ZS) being directed to pass through second rotatable compensator (ZC 2 ) and said analyzer (ZP 2 ) before being caused to reflect from a beam chromatic shifting and directing means (ZCM) or beam directing mirror (ZM), said electromagnetic radiation reflected from said beam chromatic shifting and directing means (ZCM) being then caused to pass through focusing lens (ZFL) and enter spectrometer (ZSPEC) which comprises a multi-element detector system; there being at least one beam chromatic shifting and directing means (ZCM) present between said source of electromagnetic radiation (ZQTH) and said spectrometer (ZSPEC), which de-emphasizes intensity in visual wavelengths and while simultaneously increasing both IR and UV wavelength intensities.