Uncertainty of refractive-index measurements of optical-glasses are further suppressed in a prism-pair interferometer by a quadrature-detection and a shared light-source. Uncertainty of 1.50 × 10<sup>-6</sup>is confirmed by an interlaboratory comparison based on other methods.
© 2009 The Optical Society
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4530) Instrumentation, measurement, and metrology : Optical constants
Y. Hori, A. Hirai, and K. Minoshima, "Quadrature Detection and Cancellation of Absolute Wavelength in a Prism-Pair Interferometer for High-Accuracy Refractive Index Measurements of Glasses," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper JThE84.
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