Polarization-encoded Kramers–Kronig single-path interferometer to unscramble a twisted wavefront
Abstract
We propose and experimentally demonstrate a single-shot approach to unscrambling a twisted wavefront, leveraging a single-path interferometer and the Kramers–Kronig (KK) relation. In a single-path interferometer, a twisted beam and a coaxial plane wave are encoded into orthogonal polarizations, i.e., horizontal and vertical, respectively, and self-interfered through a passive projection onto a diagonal basis. The self-interference of orthogonal polarizations generates a petal-like structure interferogram. By harnessing the KK relation, a twisted wavefront is unscrambled from the interferogram, yielding robust retrieval of the complex field. The proposed technique enables high-fidelity recovery of twisted wavefronts in a single exposure, offering a robust and alignment-insensitive solution for real-time structured beam diagnostics and singular optics applications.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (6)
Tushar Sarkar
Key Laboratory of Optoelectronic Devices and Systems of the Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University 1 , Shenzhen 518060,
Yizhe Li
State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
Jiapeng Cai
Key Laboratory of Optoelectronic Devices and Systems of the Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University 1 , Shenzhen 518060,
Zaoxin Chen
Key Laboratory of Optoelectronic Devices and Systems of the Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University 1 , Shenzhen 518060,
Xiang Peng
Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology
Wenqi He