We demonstrate quantitative phase imaging of a neutral atomic beam by using a noninterferometric technique. A collimated thermal atomic beam is phase shifted by an off-resonant traveling laser beam with both a Gaussian and a TEM<sub>01</sub> profile and with both red and blue detuning of as much as 50 GHz. Phase variations of more than 1000 rad were recovered from velocity-selective measurements of the propagation of the atomic beam and were found to be in quantitative agreement with theoretical predictions based on independently measured phase object intensity profiles and detunings.
© 2002 Optical Society of America
(100.5070) Image processing : Phase retrieval
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(260.3160) Physical optics : Interference
(350.5030) Other areas of optics : Phase
P. J. Fox, T. R. Mackin, L. D. Turner, I. Colton, K. A. Nugent, and R. E. Scholten, "Noninterferometric phase imaging of a neutral atomic beam," J. Opt. Soc. Am. B 19, 1773-1776 (2002)