Optical Lattice Clock Vacuum Package for Compact Atom Trapping
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Solution Overview
Problem
Existing optical lattice clocks face challenges in miniaturization and transportability due to complex arrangements of axes for atom beams, laser light, and magnetic fields, making it difficult to integrate required devices and components.
Innovation Solution
A physics package for an optical lattice clock is designed with a MOT device along the atom beam axis, an optical lattice formation portion to confine and move atoms, and a vacuum chamber with a prism-shaped main body and a protruding portion, allowing for integration of components and facilitating miniaturization and transportability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical lattice clock components are arranged sequentially in a frame structure, then the clock can achieve high measurement accuracy, but the device size becomes large and transportability is poor
Solution Approach 1:
The patent implements nesting by placing the Zeeman slower inside the vacuum chamber, and positioning the MOT device within the vacuum chamber environment. This nested arrangement eliminates the need for separate external housings for each component, significantly reducing the overall physics package volume while maintaining the functional integrity required for high-precision time measurement
Solution Approach 2:
The patent merges multiple functional components into a single integrated vacuum chamber structure. The vacuum chamber simultaneously serves as the containment environment for the Zeeman slower, MOT device, and optical lattice region, combining what were previously separate sequential arrangements into one unified structure that reduces total volume
2Reliability
If magnetic field correction coils are arranged outside the vacuum chamber for each axis, then magnetic field compensation can be achieved, but the device complexity and spatial requirements increase
Solution Approach 1:
The patent combines magnetic field correction coils for all three axes into a single integrated coil assembly positioned outside the vacuum chamber. This unified coil structure replaces the conventional separate coil arrangements for each axis, reducing spatial requirements and simplifying the overall device configuration while maintaining full magnetic field compensation capability across all axes
Solution Approach 2:
The integrated coil assembly serves multiple functions simultaneously - it provides magnetic field correction for the Zeeman slower, MOT device, and optical lattice regions all through one coordinated system. This multi-functional design eliminates the need for separate dedicated coils for each functional region, reducing device complexity
3Measurement precision
If components are arranged to facilitate high-precision spectroscopy, then measurement accuracy is improved, but the device becomes difficult to transport and install in field conditions
Solution Approach 1:
The patent merges all critical spectroscopy components (Zeeman slower, MOT device, optical lattice region) into a single vacuum chamber assembly that functions as one integrated unit. This consolidation transforms what would otherwise be a complex multi-component system requiring elaborate installation into a modular unit that can be transported and deployed in field conditions while maintaining high spectroscopy precision
Solution Approach 2:
The nested arrangement of components within the vacuum chamber creates a compact, self-contained physics package. The Zeeman slower is nested within the vacuum chamber, the MOT device is nested within the same environment, and the optical lattice region is integrated into this nested structure. This nesting enables the entire high-precision spectroscopy system to be packaged in a transportable form factor
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
The proposed design enables the integration of components, facilitating miniaturization and transportability of the optical lattice clock, thereby improving its usability in various applications beyond laboratory settings.
Implementation Method 1
a MOT device that is arranged along a beam axis of an atom beam, and captures an atom population
Implementation Method 2
a MOT device that is arranged along a beam axis of an atom beam, and captures an atom population
Implementation Method 3
an optical lattice formation portion that forms an optical lattice using incident optical lattice light, confines the atom population captured by the MOT device in the optical lattice
Implementation Method 4
an optical lattice formation portion that forms an optical lattice using incident optical lattice light
Implementation Method 5
moves the atom population to a clock transition space for prompting clock transition along a movement axis perpendicular to the beam axis
Data Source
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AI summary
Provided is a physical package for an optical lattice clock which has a structure that enables reduction in size or transportation. A physical package (12) is provided with: a Zeeman slower (44) with a partial MOT and a partial MOT device (48) which constitute a MOT device; an optical chamber (46) which constitutes an optical lattice formation portion; and a vacuum chamber (20) which surrounds these components and has a substantially cylindrical shape. The MOT device is arranged along the beam axis of an atomic beam (42) and traps an atom cluster. The optical lattice formation portion uses optical lattice light that enters therein to form an optical lattice in a cavity, confines the atom cluster trapped by the MOT device in the optical lattice, and transfers, along the X-axis which is a movement axis perpendicular to the beam axis, the atom cluster to a clock transition space (52) which facilitates clock transition. The central axis of the cylinder of the main body (22) of the vacuum chamber (20) passes through the clock transition space (52), and is set to be substantially parallel with the beam axis.