We report 3-D imaging of density in a supersonic expansion using beam-deflection optical tomography. Quantitative high-resolution images with absolute accuracy of 3%, dynamic range of 500:1, and spatial resolution to within a factor of 1.7 of the diffraction limit were produced with a He–Ne laser and simple apparatus. Theory shows that the spatial frequency content of beam-deflection measurements is well suited for tomographic reconstruction. The theory for the diffraction-limited resolution for tomography is presented.
© 1988 Optical Society of America
Original Manuscript: November 16, 1987
Published: December 15, 1988
Gregory W. Faris and Robert L. Byer, "Three-dimensional beam-deflection optical tomography of a supersonic jet," Appl. Opt. 27, 5202-5212 (1988)