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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 16 — Aug. 15, 1983
  • pp: 2429–2436

High-speed retardation modulation ellipsometer

A. Moritani, Y. Okuda, H. Kubo, and J. Nakai  »View Author Affiliations


Applied Optics, Vol. 22, Issue 16, pp. 2429-2436 (1983)
http://dx.doi.org/10.1364/AO.22.002429


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Abstract

Construction and performance of a high-speed retardation modulation ellipsometer are described. An ADP four-crystal electrooptic modulator is used for the retardation modulation and a high-speed digitizer for the simultaneous detection of the transmitted light intensity and the modulation voltage. The ellipsometer can acquire the necessary data for determining a data point (Ψ,Δ) in 4 μsec and repeat the data acquisition for fifty data points at intervals of 4 μsec–160 msec. In such conditions, precision represented in terms of an average of root mean squares is 0.05° in Ψ and 0.15° in Δ when a BaK1 standard optical glass is used as a sample at the present stage. An example is given of the application to rapid growth of anodic films on a semiconductor GaAs wafer.

© 1983 Optical Society of America

History
Original Manuscript: February 10, 1983
Published: August 15, 1983

Citation
A. Moritani, Y. Okuda, H. Kubo, and J. Nakai, "High-speed retardation modulation ellipsometer," Appl. Opt. 22, 2429-2436 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-16-2429

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