Abstract
A novel frequency-swept ultrasound-modulated optical tomography technique was developed to image scattering media. A frequency-swept ultrasonic wave was used to modulate the laser light passing through a scattering medium. The modulated light was received by an optical detector and was heterodyned with a reference frequency sweep. The heterodyned signal was recorded in the time domain and was then analyzed in the frequency domain to yield a one-dimensional image along the ultrasonic axis. Multiple one-dimensional images obtained at various positions perpendicular to the ultrasonic axis were combined to yield a two-dimensional tomographic image of the medium.
© 1998 Optical Society of America
Full Article | PDF ArticleMore Like This
Gang Yao, Shuliang Jiao, and Lihong V. Wang
Opt. Lett. 25(10) 734-736 (2000)
Lihong V. Wang and Qimin Shen
Opt. Lett. 23(7) 561-563 (1998)
Sava Sakadžić and Lihong V. Wang
Opt. Lett. 29(23) 2770-2772 (2004)