The topography of moving surfaces is recovered by noninterferometric measurements. The phase reconstruction is derived by measuring the intensities of a backscattered pulsed laser light and solving the transport intensity equation (TIE). The TIE is solved by expanding the phase into a series of Zernike polynomials, leading to a set of appropriate algebraic equations. This technique, which enables us to make a direct connection between experiments and the TIE, has been successfully tested in gas gun experiments. In particular, the topographies of a moving projectile and the free surface of a shocked target were recovered.
© 2011 Optical Society of America
Original Manuscript: March 21, 2011
Revised Manuscript: May 31, 2011
Manuscript Accepted: May 31, 2011
Published: July 8, 2011
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics
Shirly Vinikman Pinhasi, Shalom Eliezer, Benny Glam, Gabi Appelbaum, and Lior Bakshi, "Noninterferometric topography measurements of fast moving surfaces," J. Opt. Soc. Am. A 28, 1562-1565 (2011)