Magneto-Optical Trap With Ring Magnets for Continuous Atom Ejection
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Solution Overview
Problem
Existing optical lattice clocks face challenges in achieving continuous operation and efficient ejection of trapped atoms for applications beyond research laboratories, such as geodetic techniques, due to limitations in trapping and releasing mechanisms.
Innovation Solution
A magneto-optical trap device with a first former forming an atom trap space using laser beams and a magnetic field, and a second former creating a non-atom-trap space, combined with a light beam irradiator to extract atoms from the intersecting region, utilizing magnets with holes to allow light beams to pass through and form a quadrupole magnetic field for trapping and a push laser beam for ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a magneto-optical trap device uses traditional trapping mechanisms with solid former structures, then atoms can be effectively trapped in a defined space, but the trapped atoms cannot be efficiently ejected for continuous operation
Solution Approach 1:
The patent uses a porous former structure with through-holes that allows laser beams to pass through and creates defined trapping regions. The porous structure enables spatial separation of trapping zones while maintaining structural integrity, allowing atoms to be trapped in one region and ejected through openings to another region for continuous operation
Solution Approach 2:
The former is divided into multiple segments including a first former with a first hole and a second former with a second hole, creating distinct trapping regions. This segmentation allows independent control of different functional zones - one for trapping and another for ejection - enabling continuous operation without disrupting the trap
2Reliability
If magnets are used to generate quadrupole magnetic field for trapping atoms, then effective atom confinement is achieved, but the magnetic field structure blocks light beams needed for trapping and ejection
Solution Approach 1:
The magnetic former is designed with through-holes that allow laser beams to pass through while the magnetic material surrounding the holes generates the required quadrupole magnetic field. This porous configuration resolves the conflict between magnetic field generation and light transmission by separating these functions spatially
Solution Approach 2:
The patent transitions from a solid blocking structure to a porous structure where the magnetic field generation occurs in the material walls while light transmission occurs through the holes. This dimensional separation allows both magnetic confinement and optical access to coexist effectively
3Measurement precision
If the trap space is formed using intersecting laser beams and magnetic fields, then atoms can be confined with high precision, but the trap must be disrupted to eject atoms, preventing continuous operation
Solution Approach 1:
The trap device is segmented into distinct functional regions: a first trapping region formed by the first former and first laser beams, and a second region for atom ejection. This segmentation allows the trap to maintain high precision confinement in the first region while enabling continuous operation through the second region without disrupting the primary trap
Solution Approach 2:
The porous former structure acts as an intermediary that defines trapping regions while allowing controlled atom transfer. The structured openings serve as intermediary pathways that enable atom ejection without requiring disruption of the primary magnetic and optical trapping fields
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous trapping and ejection of cold atoms without disrupting the trap, allowing for continuous operation and efficient transfer to subsequent devices, maintaining high precision and enabling applications like geodetic measurements.
Implementation Method 1
a first former (1001) configured to form an atom trap space (102) in which atoms are trapped with a first set of light beams and a magnetic field
Implementation Method 2
The Zeeman slower decelerates, through Zeemanslowing technique, a velocity of an atomic beam emitted from the atomic oven
Implementation Method 3
The high radiation power of this laser beam decelerates the atomic beam
Data Source
AI summary
According to the present invention, atoms are trapped by a quadrupole magnetic field formed by ring-shaped magnets and three sets of laser beam pairs. A portion of the laser beam pairs is partially blocked by the ring-shaped magnets, , so that a region which is a non-atom trap space is formed inside an intersecting region where the three groups of laser beam pairs cross. The inside of the intersecting region is irradiated with a laser beam so that atoms within the non-atom catch space are extracted from the intersecting region.