We propose an asymmetric wavelet method to reconstruct a particle from a hologram illuminated by an elliptical, astigmatic Gaussian beam. The particle can be reconstructed by a convolution of the asymmetric wavelet and hologram. The reconstructed images have the same size and resolution as the recorded hologram; therefore, the reconstructed 3D field is convenient for automatic particle locating and sizing. The asymmetric wavelet method is validated by both simulated holograms of spherical particles and experimental holograms of opaque, nonspherical coal particles.
© 2013 Optical Society of America
Original Manuscript: March 8, 2013
Revised Manuscript: April 25, 2013
Manuscript Accepted: May 16, 2013
Published: July 12, 2013
Xuecheng Wu, Yingchun Wu, Binwu Zhou, Zhihua Wang, Xiang Gao, Gérard Gréhan, and Kefa Cen, "Asymmetric wavelet reconstruction of particle hologram with an elliptical Gaussian beam illumination," Appl. Opt. 52, 5065-5071 (2013)