Calibration of reference standard quartz rotating plates

• Autorzy: Sidki H. M. , Amer M. , Abd El Aziz F.
• Języki publikacji: EN

Abstrakty

EN

An accurate linear polarized optical system for calibrating the quartz plate angles is introduced in this work. The quartz plate parallelism and surface roughness are measured using a phase shifting laser interferometer to study their effects on quartz rotation angles which equals to š18.21 sec. A polynomial regression method is applied to determine and extrapolate quartz rotation angles corresponds to the uncalibrated regions of the visible spectrum. The bi-rotation index values (nL - nR) of the quartz plates for all scanned wavelengths are determined applying the calibrated rotation angles. The uncertainty of the calibrations is evaluated, also the combined uncertainty of calibrations for angles (Δβt ≈ š0.09°) that shows the usefulness of this article.

Słowa kluczowe

EN

quartz rotating plates; phase shifting laser interferometer; polarization optical system

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2006
• Tom: Vol. 13, nr 4
• Strony: 383--394
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Sidki H. M.

autor

Amer M.

autor

Abd El Aziz F.

• National Institute of Standards, Laboratory of Engineering and Precise Optics, Tersa Street, El-Haram, Giza, Code No. 12211, Egypt,

Bibliografia

• 1. Hecht E., Zajac A.: Optics. Addison-Wesley Pub. Comp. 2nd edition 1977.
• 2. Wolf E.: Progress in Optics. N. Holland Pub. Comp. Amsterdam, vol. II, 1963.
• 3. Ditchburn R. W., F.R.S.: Light. Blackie & Son Ltd. London, 2nd edition 1963.
• 4. Operation manual: Zygo GPI-Xp laser interferometer, Zygo Cop. (USA).
• 5. Spec. manual: Quartz Reference Plates. Bellingham & Stanly Ltd. England.
• 6. Vyšín V., Vyšín I.: Optical Rotatory Dispersion of α-Quartz. Acta Univ. Palacki. Olomuc., fac. rer. nat. (1997), Physica 36, pp. 1-13.
• 7. Guide To the Expression of Uncertainty in measurement, 1995 International Organization for Standardization, ISO. 1995.
• 8. Hastings N. A. J., Peacock J. B.: Statistical distributions. London; Butterworth and Co., 1975.