Abstract

Several methods of electronic holography for imaging through scattering media, especially biological tissue, are described. The methods employ short pulses, noise modulated waveforms with narrow autocorrelation functions, light of reduced spatial coherence, synthetic spectrum technology, or a combination of these methods. We introduce models that predict the limitations of the various methods and describe the various limitations and the tradeoffs. The resolution vs. signal-to-noise ratio tradeoff is particularly significant. We consider combining the first-arriving-light and the confocal-scanning methods, where we employ a confocal technique that eliminates the need for scanning. We show experimental results.

© 1992 Optical Society of America