Measurement of group refractive indices of glass using a color-selective multi-pulse generated with a spatial light modulator

We demonstrate a method of measuring group refractive indices ( ) by using only a temporal waveform of a color-selective multi-pulse (CSMP) generated with a spatial-light-modulator-based optical pulse shaper. Each pulse of the CSMP is characterized by different spectral components. Thus, of a sample...

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Bibliographic Details
Published inOptics letters Vol. 46; no. 7; p. 1534
Main Authors Takahashi, Hisanari, Watanabe, Koyo, Shigematsu, Kyohhei, Inoue, Takashi, Satozono, Hiroshi
Format Journal Article
LanguageEnglish
Published United States 01.04.2021
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Summary:We demonstrate a method of measuring group refractive indices ( ) by using only a temporal waveform of a color-selective multi-pulse (CSMP) generated with a spatial-light-modulator-based optical pulse shaper. Each pulse of the CSMP is characterized by different spectral components. Thus, of a sample can be estimated by calculating the group delay of the spectrally different pulses in the CSMP after passing through the sample. As a proof-of-concept, we measured of a glass plate by using a CSMP. We confirmed that the measured values were in agreement with those derived from Sellmeier's formula with an accuracy on the order of 10 .
ISSN:1539-4794
DOI:10.1364/OL.421021