Abstract

For femtosecond time resolved spectroscopy experiments, it is often interesting to change the wavelength of the pump and the probe. Generally, the production of tunable femtosecond pulses is obtained through spectral continuum generation in order to produce a white light. However, there are some limitations in energy and the spatial profile is altered by self focusing. Optical parametric generation is a non linear process which plays an important role in the development of easily and widely tunable coherent sources ^[1-3].

© 1994 Optical Society of America