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A method for calibration of Soleil-Babinet compensator using a spectrophotometer

✍ Scribed by Jun Wang; Lei Chen; Bo Li; Lili Shi; Ting Luo

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
423 KB
Volume
48
Category
Article
ISSN
0143-8166

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✦ Synopsis

A method using a spectrophotometer for calibrating Soleil-Babinet compensator is proposed. It is based on the spectroscopic method which utilizes the relation between transmittance and wavelength to obtain retardation. By placing a multiple order half wave plate behind the Soleil-Babinet compensator, zero-order retardation can be measured, which is difficult to accomplish by spectroscopic method. In the experiment, the retardations of the compensator in the range 0-l are measured. It is demonstrated that the precision of retardation is 0.45 nm at the position 0 and l while the maximum error is less than 1 nm between the two positions.

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