A frequency-doubled, pulsed laser system for rubidium manipulation
  We have constructed a pulsed laser system for the manipulation of cold Rb atoms. The system combines optical telecommunications components and frequency doubling to generate light at 780 nm. Using a fast, fibre-coupled intensity modulator, output from a continuous laser diode is sliced into pulses with a length between 1.3 and 6.1 ns and a repetition frequency of 5 MHz. These pulses are amplified using an erbium-doped fibre amplifier, and frequency-doubled in a periodically poled lithium niobate crystal, yielding a peak power up to 12 W. Using the resulting light at 780 nm, we demonstrate Rabi oscillations on the F = 2 <-> F=3-transition of a single 87Rb atom. 
J. Dingjan (1), B. Darquie (1), J. Beugnon (1), M. P. A. Jones (1), S.   Bergamini (1 and 2), G. Messin (1), A. Browaeys (1)...