منابع مشابه
Atom lithography with laser-cooled silicon atoms
An all-solid-state 252 nm coherent light source with external cavities for laser cooling silicon atoms using twostage highly efficient frequency conversions has been developed. With the coherent light source, it is possible to manipulate the atomic motion of the silicon atoms, which is necessary for nano-process applications. In this paper, deflection, collimation, and axial velocity selection ...
متن کاملMultiple species atom source for laser-cooling experiments
We describe the design of a single beam, multiple species atom source in which the flux of any component can be separately adjusted. Using this design we have developed a Na–Li atom source for ultracold atom experiments. The fluxes of lithium and sodium are independently tunable, allowing operation as a single Na or Li source as well as a double source with equal atomic fluxes in each component...
متن کاملAtom lithography with metastable helium
A bright metastable helium He beam is collimated sequentially with the bichromatic force and three optical molasses velocity compression stages. Each He atom in the beam has 20 eV of internal energy that can destroy a molecular resist assembled on a gold coated silicon wafer. Patterns in the resist are imprinted onto the gold layer with a standard selective etch. Patterning of the wafer with th...
متن کاملDouble-EIT ground-state laser cooling without blue-sideband heating
– We discuss a laser cooling scheme for trapped atoms or ions which is based on double electromagnetically induced transparency (EIT) and makes use of a four-level atom in tripod configuration. The additional fourth atomic state is coupled by a strong coupling laser field to the usual three-level setup of single-EIT cooling. This effectively allows to create two EIT structures in the absorption...
متن کاملAtom lithography with a holographic light mask.
In atom lithography with optical masks, deposition of an atomic beam on a given substrate is controlled by a standing light-wave field. The lateral intensity distribution of the light field is transferred to the substrate with nanometer scale. We have tailored a complex pattern of this intensity distribution through diffraction of a laser beam from a hologram that is stored in a photorefractive...
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ژورنال
عنوان ژورنال: Applied Physics B
سال: 2009
ISSN: 0946-2171,1432-0649
DOI: 10.1007/s00340-009-3867-3