Polarimetry data: Dual-wavelength polarimetric method for studying of circular birefringence and optical activity in the birefringence direction of the crystals.
Description
These data supplement the manuscript "Dual-wavelength polarimetry for the study of circular birefringence in orthorhombic crystals ". The abstract is reproduced below. This study investigates the circular birefringence (CB) and optical activity (OA) of non-enantiomorphous orthorhombic crystals belonging to the mm2 point group. We employ an enhanced dual-wavelength high-accuracy universal polarimetry (DHAUP) technique using two closely spaced He-Ne laser wavelengths 594 nm and 633 nm. This approach facilitates the expansion of the experimental dataset and a more robust reduction of systematic errors compared to conventional single-wavelength HAUP. The method was applied to industrial-grade samples of lithium triborate LiB3O5 (LBO), potassium titanyl phosphate KTiOPO4 (KTP), potassium titanyl arsenate KTiOAsO4 (KTA), and gadolinium molybdate Gd2(MoO4)3 (GMO).
Files
Steps to reproduce
The directly measured quantities are cosinus of the phase differences (cos (Γ_1,2)) and the polarizer azimuths θ_i1,2 and θ_c1,2. Other trigonometric functions and quantities required for the experiment, are calculated. A similar data processing procedure is used for the investigated orthorhombic crystals (namely LBO, KTP, KTA, and GMO). The files include the temperature dependencies of cos (Γ_1,2) , polarizer azimuths θ_i1,2 and θ_c1,2, differences Δθ_i, and phase parameters A(Γ_1,Γ_2) and B(Γ_1,Γ_2). Furthermore, according to the description of the experimental principle (see Experimental principle.pdf), it is possible to find the ellipticity of eigen waves (EWE) and, using the well-known relationships, calculate the circular birefringence (CB), optical activity (OA), and optical rotatory power (ORP).
Institutions
- Gdańsk University of TechnologyPomerania, Gdansk
- Cardinal Stefan Wyszynski University in WarsawMazovia, Warsaw