Wavelength-Scale Imaging of Trapped Ions using a Phase Fresnel lens

Details Wavelength-Scale Imaging of Trapped Ions using a Phase Fresnel lens Wavelength-Scale Imaging of Trapped Ions using a Phase Fresnel lens

2011-01-24

arxiv.org/abs/1101.4443v1

Physics

Quantum Physics

8 pages, 3 figures

Scientific paper

A microfabricated phase Fresnel lens was used to image ytterbium ions trapped in a radio frequency Paul trap. The ions were laser cooled close to the Doppler limit on the 369.5 nm transition, reducing the ion motion so that each ion formed a near point source. By detecting the ion fluorescence on the same transition, near diffraction limited imaging with spot sizes of below 440 nm (FWHM) was achieved. This is the first demonstration of imaging trapped ions with a resolution on the order of the transition wavelength.

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