By pumping a brewster-cut Ti:sapphire crystal from both sides with a frequency-doubled Nd:YAG laser at 6J/cm2 we achieved a single pass gain of 20dB. This allows to amplify pulses from the nano-Joule to the milli-Joule level with a triple-pass amplifier with > 60dB gain. An output energy up to 3.5mJ was measured, depending on the input energy from the oscillator/stretcher front end. The triple-pass amplifier was used in a chirped-pulse amplification terawatt system. We discuss the advantages of this approach, e.g. for the amplification of very short pulses and for the level of amplified spontaneous emission.
No takes yet. Share an insight, caveat, or question.
Schillinger et al. (1997) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: