Nils Kretzschmar

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We present an all-solid-state laser source emitting up to 2.1 W of single-frequency light at 671 nm developed for laser cooling of lithium atoms. It is based on a diode-pumped, neodymium-doped orthovanadate (Nd:YVO(4)) ring laser operating at 1342 nm. Optimization of the thermal management in the gain medium results in a maximum multi-frequency output power(More)
– We demonstrate sub-Doppler cooling of 40 K on the D1 atomic transition. Using a gray molasses scheme, we efficiently cool a compressed cloud of 6.5 × 10 8 atoms from ∼ 4 mK to 20 µK in 8 ms. After transfer in a quadrupole magnetic trap, we measure a phase space density of ∼ 10 −5. This technique offers a promising route for fast evaporation of fermionic(More)
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