Fig. 1. Comparison of Raman spectra of mineral materials
(a): Kaolinite pressed tablets under excitation light of different wavelengths; (b): Sintered porcelain clay under excitation light of different wavelengths

Fig. 2. Raman spectra of typical ceramic samples
(a): Glaze and body of modern Sancai samples under excitation light (532 nm);(b): Ru glaze under excitation light of different wavelengths;(c): White glaze of blue and white porcelain from Yuan dynasty under excitation light of different wavelengths;(d): Sintered ceramic reference DH under excitation light of different wavelengths

Fig. 3. Comparison of infrared spectra of typical samples
(a): Mineral materials in transmission mode; (b): Bodies and sintered ceramic reference DH in transmission mode

Fig. 4. Comparison of Raman spectra in wavelength mode
(a): Glazes and sintered ceramic reference DH under excitation light (514 nm); (b): Ru glaze under excitation light of different wavelengths