Polarization-Dependent Birefringence in Lithium Aluminosilicate Glass

• Published in: Glass and ceramics Vol. 79; no. 1-2; pp. 45 - 47
• Main Authors: Sigaev, V. N., Lipat’ev, A. S., Fedotov, S. S., Lotarev, S. V., Naumov, A. S., Shevyakina, D. M.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-05-2022; Springer; Springer Nature B.V
• Subjects: Aluminosilicates; Aluminum oxide; Aluminum silicates; Birefringence; Ceramics; Characterization and Evaluation of Materials; Chemical composition; Chemistry and Materials Science; Composites; Composition effects; Femtosecond pulses; Glass; Lithium; Lithium aluminosilicate; Materials Science; Natural Materials; Parameter modification; Polarization; Silicates; lithium silicate glass; nanogratings; lithium aluminosilicate glass; femtosecond laser modification [micromachining]; polarization-dependent birefringence
• ISSN: 0361-7610; 1573-8515
• DOI: 10.1007/s10717-022-00451-y

The formation of polarization-dependent birefringence, apparently due to the formation of nanogratings, in the bulk of lithium silicate and lithium aluminosilicate glasses under the action of a series of femtosecond laser pulses was demonstrated. The phase shift in the light passing through the modified regions was determined as a function of the parameters of the laser radiation and the chemical composition of the glass. It is shown that Al
2
O
3
content growth due to the presence of an alkaline component in the glass composition effects an increase in the minimum number of pulses required for the formation of a birefringent region as well as an increase in the retardance.