A Fabry-Perot cavity device capable of simultaneous multi-beam laser frequency stabilization

Abstract

The present invention discloses a Fabry-perot cavity device for multi-beam laser frequency stabilization. The device comprises an ultra-low thermal expansion coefficient material cavity located in a vacuum chamber and provided with a plurality of Fabry-perot cavities, and each Fabry-perot cavity corresponds to an incident cavity mirror, an emergent cavity mirror, an incident glass window, an emergent glass window, a photoelectric detector, a calculation controller, a laser to be stabilized, a channel first reflector, a lens and a channel second reflector. The Fabry-perot cavity device for multi-beam laser frequency stabilization can lock multi-beam laser frequency at the same time and inhibit long-term drifting of the multi-beam laser frequency so as to save the space and reduce the cost; and reference laser or atomic spectral lines are not needed as reference in the usage process, and the usage is convenient. The Fabry-perot cavity device for multi-beam laser frequency stabilization can be widely applied to fields requiring stable laser frequency such as laser physics, optical frequency standard, quantum information and the like.

Description

technical field [0001] The invention relates to laser frequency stabilization technology, and more specifically relates to a Fabry-Perot cavity device capable of simultaneous multi-beam laser frequency stabilization. It is suitable for laser physics, optical frequency standards, quantum information and other fields that require stable laser frequency. Background technique [0002] In experiments such as optical frequency standards and quantum information, multiple frequency-stabilized lasers are required to cool atoms, molecules, and ions and manipulate quantum states. The experiment requires that the long-term drift of these laser frequencies should be lower than 1MHz / h. For a free-running laser, the long-term drift can reach 100MHz / h due to temperature changes, vibration and noise in the laboratory environment, so it is necessary to stabilize the frequency of the laser. The technical means to achieve laser frequency stabilization include transmission cavity frequency stab...

AI Technical Summary

Problems solved by technology

The technical means to achieve laser frequency stabilization include transmission cavity frequency stabilization and saturated absorption line frequency stabilization. The former requires a highly stable laser as a reference, which cannot be realized in an experimental environment lacking ultra-stable lasers. The latter Those who need to have a suitable atomic and molecular spectral line as a reference, but for some laser wavelengths that cannot find the corresponding atomic spectral line, there is also a lack of conditions for realization

[0003] The traditional Fabry-Perot cavity frequency stabilization method can only use a set of ULE cavity to stabilize the frequency of a laser beam to be stabilized, which is a waste of space, and due to the high price of ULE materials, it is necessary to stabilize multiple laser beams in the experiment. When the frequency is high, the cost of using traditional methods for frequency stabilization will be huge

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