A high-energy, chirped laser system for optical Stark deceleration |
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| Authors: | N. Coppendale L. Wang P. Douglas P. F. Barker |
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| Affiliation: | (1) Princeton University, Engineering Quad., Olden Street, Princeton, NJ 08544, USA;(2) University College London, London, WC1E 6BT, UK;(3) University of Southern California, Los Angeles, CA 90089, USA |
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| Abstract: | We describe a high-energy, frequency chirped laser system designed for optical Stark deceleration of cold molecules. This system produces two, pulse amplified beams of up to 700 mJ with flat-top temporal profiles, whose frequency and intensity can be well controlled for durations from 20 ns–10 μs. The two beams are created by amplifying a single, rapidly tunable Nd:YVO4 microchip type laser at 1064 nm, which can be frequency chirped by up to 1 GHz over the duration of the pulse. Intensity modulation induced by relaxation oscillations in the microchip laser during the frequency chirp are virtually eliminated by injection locking a free running semiconductor diode laser before pulsed amplification. |
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