Related Experiment Video
Updated: Jun 23, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Optimization criterion for initial coherence degree of lasers in free-space optical links through atmospheric
Chunyi Chen1, Huamin Yang, Xin Feng
1Changchun University of Science and Technology, Changchun 130022, China. chenchunyi@hotmail.com
Abstract:
Partially coherent beams can be used to reduce the turbulence-induced scintillation; however, the partial coherence induces the decrease of the mean received irradiance. An optimization criterion for the initial coherence degree of lasers is proposed. This criterion maximizes the received irradiance that occurs with the highest probability. A method for adaptive initial coherence was given to use the criterion in practical applications.
Related Concept Videos
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
Propagation Speed of Electromagnetic Waves