Pressure-Induced Changes in Parameters of the Indicatrix of Lithium Sodium Sulfate Crystals

Spectral, temperature, and baric dependences of birefringence Δ n i of LiNaSO 4 (LSS) crystals have been studied. It is established that dispersion Δ n (λ) is anomalous. It is shown that uniaxial compression leads to changes in Δ n і with different magnitudes and signs. The dispersion effect of chan...

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Bibliographic Details
Published in:Optics and spectroscopy 2019-12, Vol.127 (6), p.1023-1027
Main Authors: Stadnyk, V. Yo, Shchepanskyi, P. A., Brezvin, R. S., Rudysh, M. Ya, Matviiv, R. B.
Format: Article
Language:English
Subjects:
Birefringence
Chemical bonds
Crystals
Dispersion
Lasers
Lithium
Optical Devices
Optics
Photonics
Physical Optics
Physics
Physics and Astronomy
Refractivity
Sodium sulfate
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Summary:Spectral, temperature, and baric dependences of birefringence Δ n i of LiNaSO 4 (LSS) crystals have been studied. It is established that dispersion Δ n (λ) is anomalous. It is shown that uniaxial compression leads to changes in Δ n і with different magnitudes and signs. The dispersion effect of changes in Δ n і decreases under stress and increases in the opposite case (σ || z ). Pressure-induced changes in the refractive index are estimated; it is established that the refractive indices of an LSS crystal increase under uniaxial compression, which may be related to compression of the crystal and change in its interatomic bond nature.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X19120257