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Investigation into diode pumped modelocked ND based laser oscillators for the CLIC photoinjector system

Valentine, G.J. and Burns, D. and Bente, E.A.J.M. (2001) Investigation into diode pumped modelocked ND based laser oscillators for the CLIC photoinjector system. In: Proceedings IEEE/LEOS Annual Symposium. Vrije Universiteit Brussel, Brussel. ISBN 90-5487247-0

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Abstract

The photo-injector system envisaged for the proposed CLIC linear e+-e- accelerator at CERN has a demanding set of specifications on output pulse structure, power and timing stability. This paper reports on results obtained with quasi-CW diode pumped laser oscillators with output stabilisation. A 300W 804nm diode array stack is used to side pump Nd:YLF (1047nm) crystals with 200μs pulses at 100Hz repetition rate. Using feedback from the laser output to control an acousto-optic loss modulator in the cavity, start-up spiking and Q-switched behaviour is suppressed. Preliminary results obtained on incorporation of a saturable absorbing mirror for passive modelocking are presented.