Abstract
The arrangement of our Colliding-Pulse Modelocking (CPM) dye laser with four-Prism sequence[1] is shown in Fig. 1. In order to provide both frequency tunability and adjustable group-velocity dispersion the four prisms are arranged in this way. Put the prism II in this position in which the laser beam just passes through the apex by a part, i.g. only a part of the laser beam passes through the prism at apex and other part of the laser beam escapes by the apex of the prism. Because the incident light is dispersed by prism I, So the various wavelength compunents are distributed on the surface of prism II. Transmitted spectral components are changed when the prism II is translated along the direction normal to its base, and therefore the lsing wavelength is tunable.
© 1988 Optical Society of America
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