Abstract
Optical imaging through animal tissues has attracted much research interest in recent years. Methods using a picosecond laser and a streak camera, a picosecond laser and a Raman amplifier, a femtosecond laser and interferometry, and a femtosecond laser and electronic holography have been developed, and their capability of imaging through animal tissues has been demonstrated under different experimental conditions.1-3 The reason for using ultrashort-pulse lasers is that random scattering in animal tissues increases the optical path length. Hence by time-domain gating, one can reject the delayed light that has encountered multiple scattering, and one can recover the unscrambled images from the least-scattered light.
© 1995 Optical Society of America
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