Measuring optical vortices by means of dual shearing-type Sagnac interferometers [article]

Hantao Wang, Huajun Zhang, Mingyuan Ren, Wenkai Yao, Yu Zhang
2021 arXiv   pre-print
Measuring the positions of optical vortices is an essential part in the researches of speckles and adaptive optics. The measurement accuracy is restricted by the performance of optical devices and the properties of optical vortices, such as density and size. In order to achieve high accuracy and wide range of application, the dual shearing-type Sagnac interferometers is proposed using two shearing plates to adjust the precision of optical vortices measurement. The shearing displacements are
more » ... to balance the measuring precision and the value of the intensity ratio point to provide optimum measurement performance. This method is useful for the observation of optical vortices with different sizes and densities, especially for the high density condition.
arXiv:2106.11667v1 fatcat:5ubsukdsknhfnjwyhysehoxpuq