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Crystal lattice field device capable of realizing power enhancement, phase adjustment and locking

A phase adjuster and phase technology, applied in the field of lattice field devices, can solve problems such as poor stability and tunability, high economic cost, and bulky volume, and achieve the goal of increasing number and density, improving stability, and simplifying complexity Effect

Active Publication Date: 2019-07-26
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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Problems solved by technology

At present, the lasers used in the construction of optical lattices in optical clock systems generally use titanium sapphire lasers or semiconductor lasers with TA amplification structures to obtain high-power laser output and meet experimental requirements. However, such laser light sources are not only economical Costly and bulky
Usually the construction of optical lattices is realized through lenses and lenses + reflectors, such as figure 1 As shown, such an implementation method not only has poor stability and tunability, but also increases the complexity of the system

Method used

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  • Crystal lattice field device capable of realizing power enhancement, phase adjustment and locking
  • Crystal lattice field device capable of realizing power enhancement, phase adjustment and locking

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0018] The invention overcomes the disadvantages of high output power of the lattice light laser source and excessive volume of the laser required for loading the optical lattice in the optical clock system, and at the same time realizes the adjustable and locked phase of the lattice field, so that the incident light and reflected light can be easily Good coincidence, realize the coherent superposition of the same phase, and finally complete the construction of a stable lattice standing wave field, which can be widely used in various neutral atomic optical clocks, and obtain a large number of cold atomic samples with high density in the optical lattice , to improve the signal-to-noise ratio of the optical clock transition signal.

[0019] Technical scheme of the present inv...

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Abstract

The invention provides a crystal lattice field device capable of realizing power enhancement, phase adjustment and locking, which comprises a laser, a vacuum cavity, plano-concave mirrors and a phaseadjuster, wherein two opposite sides of the vacuum cavity are respectively provided with a transparent window, and a cold atom sample is placed in the vacuum cavity; the plano-concave mirrors are respectively arranged outside the transparent window, and the concave surfaces are opposite to each other; laser emitted by the laser sequentially passes through one of the plano-concave mirrors, the transparent windows, the cold atom samples and the transparent windows and then is reflected by the other plano-concave mirror in the original path, so that the laser is coherently superposed at the coldatom sample for multiple times; and the other plano-concave mirror can move along the laser light path under the driving of the phase adjuster. The crystal lattice field device capable of realizing power enhancement, phase adjustment and locking can realize the phase adjustment and locking of the crystal lattice field, and the device is simple and small.

Description

technical field [0001] The invention belongs to the technical field of cold atoms, and in particular relates to a lattice field device. Background technique [0002] As the latest generation of reference atomic clock in the world, the atomic optical clock has ultra-high frequency accuracy and stability. Atomic optical clocks provide high-precision optical frequency standard sources through the preparation of ultracold atomic samples. The loading of optical lattices is a very critical step in the preparation of cold atomic samples. The number, density and stability of atoms loaded on optical lattices directly affect the clock transition spectrum. The signal-to-noise ratio of the line further affects the final stability of the optical clock. [0003] To build the lattice field of an atomic optical clock, a large laser light power is required to achieve a sufficient well depth to trap cold atoms. At present, the lasers used in the construction of optical lattices in optical c...

Claims

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Application Information

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IPC IPC(8): G04F5/14
CPCG04F5/14
Inventor 徐琴芳常宏
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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