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Updated: Feb 9, 2026

Combining Imaging and Electrophysiology to Visualize and Record Spreading Depolarizations in Mice
Published on: October 4, 2024
Considerations about the Determination of the Depolarization Calibration Profile of a Two-Telescope Lidar and Its
Adolfo Comerón1, Alejandro Rodríguez-Gómez2, Michaël Sicard3,4
1CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya (BarcelonaTech-UPC), 08034 Barcelona, Spain. comeron@tsc.upc.edu.
Abstract:
We propose a new method for calculating the volume depolarization ratio of light backscattered by the atmosphere and a lidar system that employs an auxiliary telescope to detect the depolarized component. It takes into account the possible error in the positioning of the polarizer used in the auxiliary telescope. The theory of operation is presented and then applied to a few cases for which the actual position of the polarizer is estimated, and the improvement of the volume depolarization ratio in the molecular region is quantified. In comparison to the method used before, i.e., without correction, the agreement between the volume depolarization ratio with correction and the theoretical value in the molecular region is improved by a factor of 2⁻2.5.
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