Abstract
In this work,the backbones of ultrashort laser amplifiers which are the main sources of development of femtosecond technology are discussed in the concept of design for efficiency and free abberation .Pulse propagation and best mirror-crystal position are simulated to optimize the amplifiers and verified with the experimental measurements.Even if all multipass amplifiers are similar to each other, little changes can produce significant difference like gain and pulse duration.During Kerr Lens calculations we used a lens to apprixmate the beam propagation.At the end of work,we will compare Gaussian and Non-Gaussian beam amplification.
© 2006 Optical Society of America
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