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A frequency-doubled laser system producing ns pulses for rubidium manipulation

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We have constructed a pulsed laser system for the manipulation of cold 87Rb atoms. The system combines optical telecommunications components and frequency doubling to generate light at 780 nm. Using a fast, fibre-coupled intensity modulator, we sliced output from a continuous laser diode 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,mF=+2↔F=3, m F=+3-transition of a single 87Rb atom.

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Correspondence to J. Dingjan.

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32.80.Qk; 39.25.+k; 42.55.-f

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Dingjan, J., Darquié, B., Beugnon, J. et al. A frequency-doubled laser system producing ns pulses for rubidium manipulation. Appl. Phys. B 82, 47–51 (2006).

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