We propose and demonstrate a simple off-axis scheme for particle field holography that utilizes the particle forward scattering by means of a Fourier transform lens for both recording and reconstruction. This technique has the advantages of both the low speckle noise offered by off-axis holography and the minimal laser power requirement characteristic of in-line illumination.
© 1995 Optical Society of America
Original Manuscript: July 20, 1994
Published: February 1, 1995
David D. Liu and Fazle Hussain, "Off-axis holographic technique for particle image velocimetry using a Fourier-transform lens," Opt. Lett. 20, 327-329 (1995)