Access to SPIE eBooks is limited to subscribing institutions. Access is not available as part of an individual subscription. However, books can be purchased on SPIE.Org
Chapter 9:
Observation of Light Propagation by Holography Using an Ultrashort-Pulsed Laser
Editor(s): H. John Caulfield
Author(s): Kubota, Toshihiro, Kyoto Institute of Technology
Laser development has made it possible to easily obtain an ultrashort light pulse on the order of a picosecond and femtosecond. A light pulse of 1 ps has a length of only 0.3 mm and propagates at a speed of 300,000 km/s. Of course, it cannot be directly seen. Moreover, unlike a light from a continuous-wave (cw) laser, interference between two such short pulses occurs only when they arrive at a point simultaneously. Recording such interference as a hologram makes it possible to observe the propagation of the light, which is analogous to the propagation of a ring of waves on water. This chapter demonstrates the propagation of a light pulse undergoing refraction and total reflection inside a medium, as well as diffraction by a grating. These phenomena themselves are well known in optics and the formulae have been established. Picosecond- and femtosecond-pulsed lasers are used to record the hologram in this chapter’s example.
Online access to SPIE eBooks is limited to subscribing institutions.

Back to Top