We present a narrow linewidth continuous laser source with over 11 Watts ofoutput power at 780nm, based on single-pass frequency doubling of an amplified1560nm fibre laser with 36% efficiency. This source offers a combination ofhigh power, simplicity, mode quality and stability. Without any activestabilization, the linewidth is measured to be below 10kHz. The fibre seed istunable over 60GHz, which allows access to the D2 transitions in 87Rb and 85Rb,providing a viable high-power source for laser cooling as well as forlarge-momentum-transfer beamsplitters in atom interferometry. Sources of thistype will pave the way for a new generation of high flux, high duty-cycledegenerate quantum gas experiments.
展开▼
