Open AccessMeasurement of group refractive indices of glass using a color-selective multi-pulse generated with a spatial light modulator
Author(s) -
Hiroyasu Takahashi,
Koyo Watanabe,
Kyohhei Shigematsu,
Takashi Inoue,
Hiroshi Satozono
Publication year - 2021
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.421021
Subject(s) - algorithm , artificial intelligence , computer science , analytical chemistry (journal) , chemistry , chromatography
We demonstrate a method of measuring group refractive indices ( n g ) 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, n g 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 n g of a glass plate by using a CSMP. We confirmed that the measured n g values were in agreement with those derived from Sellmeier's formula with an accuracy on the order of 10 -4 .