Wavelength-scale imaging of trapped ions using a phase Fresnel lens
Wavelength-scale imaging of trapped ions using a phase Fresnel lens
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 …