Modeling of the performance of a cryogenic gas cooled Yb:YAG multislab amplifier with a longitudinal doping gradient concentration

Amplified spontaneous emission suppression of a saturable absorber in a nanosecond double-pass laser amplifier

“…11) SA cladding is also widely used to prevent transverse lasing in disk or slab amplifiers. [12][13][14][15] In this letter, we consider that an SA-inserted between the gain medium and the return mirror of a nanosecond doublepass amplifier can effectively absorb the ASE until the seed pulse arrive. To evaluate the effectiveness of this method, we develop a theoretical model for the SA-inserted double-pass amplifier by combining existing the SA model 16) with the modified Frantz-Nodvik equation.…”