Observation of femtosecond light pulse propagation by using digital light-in-flight recording by holography

We demonstrate motion pictures of femtosecond light pulse propagation. We adopted digital light-in-flight recording by holography as a technique for observation of femtosecond light pulse propagation. We recorded and reconstructed a moving picture of femtosecond light pulse propagating on a diffuser plate on which a test chart pattern was printed. The center wavelength and the duration of the light pulse were 800 nm and 96 fs, respectively. We successfully observed femtosecond light pulse propagation for 530 fs by the technique.