Two-dimensional imaging through diffusing media using 150-fs gated electronic holography techniques.

We combine 150-fs holographic gating with specifically adapted electronic holography techniques to produce transmission images of objects embedded in diffusing material. The technique captures, without the use of scanning procedures, complete two-dimensional images with 150-fs temporal resolution, thereby yielding submillimeter spatial resolution through diffusing objects several centimeters thick.

Electronic holography and speckle methods for imaging through tissue using femtosecond gated pulses.

Electronic holography and speckle interferometry are combined with femtosecond gating techniques to form images of absorbing structures embedded in organic tissue. The method takes advantage of the inherent instability of living tissue.

Generation of optical pulses as short as 27 femtoseconds directly from a laser balancing self-phase modulation, group-velocity dispersion, saturable absorption, and saturable gain.

We describe an ultrasbort-pulse laser that, under specific operating conditions, balances the mechanisms of conventional passive mode locking and solitonlike pulse shaping in a single resonator to generate optical pulses that are to our knowledge the shortest yet emitted directly from a laser, 27 fsec.