Polarimetry data from article: Study of the optical rotatory of potassium titanyl phosphate using the advanced dual-wavelength polarimetric method

This data is a supplement to the article "Study of the optical rotatory of potassium titanyl phosphate using the advanced dual-wavelength polarimetric method". The abstract is reproduced below.
A dual-wavelength high-accuracy universal polarimeter was applied to the circular birefringence and optical activity measurement in potassium titanyl phosphate (KTP) nonlinear crystal. The experimental setup used two single-mode He-Ne lasers with close wavelengths of 594 and 633 nm as light sources. Measurement has been carried out for two crystal settings in directions of a 45-degree relative angle to the [100] and [010] crystallographic axes. Multiple light reflections inside the crystal sample were considered when processing the results of the polarimetric measurements. The results have been analysed using the optical transmission function for the polariser-sample-analyser system, and 2D intensity contour maps made it possible to determine the phase parameters, systematic errors, and eigenwaves ellipticity. It was found that the gyration tensor component of the KTP crystal is equal to g12 = 1.4 ⋅10−5 which in terms of optical rotatory power corresponds to the very small magnitude of the rotation value of 2.3 deg/mm.

本数据集为论文《采用先进双波长偏振法研究磷酸钛氧钾的旋光特性》的补充数据，现将该论文摘要转载如下：研究采用双波长高精度通用偏振仪，对磷酸钛氧钾（potassium titanyl phosphate，KTP）非线性晶体的圆双折射与旋光特性开展测量。实验装置选用波长分别为594 nm与633 nm的两台单模He-Ne激光器作为光源。实验针对晶体相对于晶体学轴[100]与[010]成45°夹角的两种取向完成了测量。在处理偏振测量结果时，已将晶体样品内部的多次光反射纳入考量。研究人员借助偏振片-样品-检偏器系统的光学透射函数对实验结果进行分析，并通过二维强度等高线图确定了相位参数、系统误差与本征波椭圆率。结果显示，KTP晶体的旋光张量分量g₁₂为1.4×10⁻⁵，其旋光能力对应的旋转值为2.3 deg/mm，量级极小。