A lattice field device capable of power enhancement, phase tunability and locking

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...

AI Technical Summary

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, but such laser 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

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