Intracavity preamplifier of modeless laser

In this paper, we present the simple and high efficient intra-cavity preamplifier of the laser channel we are developing. In usual laser channel the preamplifier medium is placed inside an additional extra-cavity. Here we have experimented a new configuration. The preamplifier is simply an intra-cavity high quality dye cell at Brewster angle. Our new preamplifier configuration is extremely simple and reliable. We will discuss the dynamics of such laser arrangement, temporal delay and pulse width reduction.