Abstract

We demonstrate a compact laser source suitable for trapping and cooling potassium. By frequency doubling a fiber laser diode at $1534\mathrm{nm}$ in a waveguide, we produce $767\mathrm{nm}$ laser light. A current modulation of the diode allows us to generate the two required frequencies for cooling in a simple and robust apparatus. We successfully used this laser source to trap ${}^{39}K$.

© 2010 Optical Society of America

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