We have modelled and used polarization spectroscopy to lock a very compact, high-performance extended cavity diode laser system to the 85Rb (F = 3 to F′ = 4) transition. The laser has a linewidth of 135 kHz. Using this system we have trapped and cooled 1.5×108 Rb atoms in a magneto-optical trap. Atoms remained continuously trapped in the MOT for several minutes.
Bibliographical noteFunding Information:
We would like to thank F. Akerboom and R.H. Mitchell for their assistance in machining and assembling the vacuum apparatus. This work is supported by the UK Engineering and Physical Sciences Research Council under grant number GR/L54301 and the Royal Society. RC acknowledges the support of the Leverhulme Trust. Kishan Dholakia is a Royal Society of Edinburgh Research Fellow.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering