Abstract

We propose a sign-singularity solution in single-shot digital speckle interferometry based on vortex-phase modulation. The vortex phase is introduced through the reference beam as variation information by a reflective liquid crystal spatial light modulator. The sign singularity is eliminated with the help of a single spiral speckle fringe pattern. To effectively obtain the deformation phase, the measurement process is specially designed on the consideration of the modulation principle of the vortex phase, which is discussed in terms of theoretical analysis and simulation results. Experiments on out-of-plane deformation measurement reveal the feasibility of the proposed method and suggest the potential in actual dynamic measurement applications.

© 2022 Optica Publishing Group

Accurate dynamic 3D deformation measurement based on the synchronous multiplexing of polarization and speckle metrology

Yijun Du, Junxiang Li, Hong Zhao, Zixin Zhao, Chen Fan, Menghang Zhou, Xingyu Yang, and Rong Zhao
Opt. Lett. 48(9) 2329-2332 (2023)

Electronic speckle pattern interferometry using vortex beams

René Restrepo, Néstor Uribe-Patarroyo, and Tomás Belenguer
Opt. Lett. 36(23) 4644-4646 (2011)

Incoherent averaging of phase singularities in speckle-shearing interferometry

Klaus Mantel, Vanusch Nercissian, and Norbert Lindlein
Opt. Lett. 39(15) 4510-4513 (2014)

Hilbert phase microscopy based on pseudo thermal illumination in the Linnik configuration

Mikołaj Rogalski, Maria Cywińska, Azeem Ahmad, Krzysztof Patorski, Vicente Micó, Balpreet S. Ahluwalia, and Maciej Trusiak
Opt. Lett. 47(22) 5793-5796 (2022)

Non-iterative multifold strip segmentation phase method for six-dimensional optical field modulation

Yueqiang Zhu, Wei Zhao, Chen Zhang, Kaige Wang, and Jintao Bai
Opt. Lett. 47(6) 1335-1338 (2022)