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Applied Optics

Applied Optics


  • Vol. 42, Iss. 7 — Mar. 1, 2003
  • pp: 1216–1227

Spectral polarization measurements by use of the grating division-of-amplitude photopolarimeter

Shankar Krishnan, Scott Hampton, James Rix, Brian Taylor, and Rasheed M. A. Azzam  »View Author Affiliations

Applied Optics, Vol. 42, Issue 7, pp. 1216-1227 (2003)

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The grating division-of-amplitude photopolarimeter (G-DOAP) is an instrument that exploits the multiple-beam-splitting, polarizing, and dispersive properties of diffraction gratings for the time-resolved measurement of the complete state of polarization of collimated broadband incident light, as represented by the four Stokes parameters as a function of wavelength across the spectrum. It is a compact, high-speed sensor that has no moving parts and is simple to install and operate. These characteristics make the G-DOAP well suited for in situ spectroscopic ellipsometry (SE) applications for monitoring and controlling thin-film processes. The design and performance of a prototype instrument are presented. Precise SE measurements, to ±0.04° in ψ and ±0.1° in Δ, are demonstrated in the 550–940-nm wavelength range.

© 2003 Optical Society of America

OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation

Original Manuscript: April 17, 2002
Revised Manuscript: November 6, 2002
Published: March 1, 2003

Shankar Krishnan, Scott Hampton, James Rix, Brian Taylor, and Rasheed M. A. Azzam, "Spectral polarization measurements by use of the grating division-of-amplitude photopolarimeter," Appl. Opt. 42, 1216-1227 (2003)

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