Observation of femtosecond light pulse propagation by digital holography

We demonstrate motion pictures of femtosecond light pulse propagation by use of digital holography. We adopted light-in-flight recording by holography as a technique for observation of femtosecond light pulse propagation. We successfully observed femtosecond light pulse propagation for 530 fs by using a femtosecond light pulse whose center wavelength and temporal duration were 800 nm and 96 fs, respectively.