Atomic interferometer light source based on sideband suppression

Abstract

The invention discloses an atomic interferometer light source based on sideband suppression, including a laser, an interferometric laser phase modulator and a control module. The input end of the interferometric laser phase modulator is connected to the output end of the laser, and the control end of the interferometric laser phase modulator is connected to the output end of the control module. Under the action of a radio frequency signal output by the control module, the interferometric laser phase modulator modulates the frequency of laser output by the laser, and suppresses a sideband or suppresses carriers at the same time, in order to realize dual frequency output or single sideband output. In the invention, the interferometric laser phase modulator suppresses excess sidebands which are produced when a general electro-optic modulator is used, and avoids the interference of excess sidebands on the whole experiment process. Therefore, the high resolution of an atomic interferometerunder the condition that an optical phase locked loop is used can be achieved.

Description

technical field [0001] The invention belongs to the field of laser frequency control, and more specifically relates to an atomic interferometer light source based on sideband suppression. Background technique [0002] In the past two decades, atomic interferometer technology has been rapidly developed and widely used. Because of its potential high sensitivity and quantum properties, it has been used in the field of precision measurement to measure gravity, gravity gradient, rotation, fine structure constant , magnetic field gradient, gravitational constant and other measurements, but also used to test some basic principles of physics. It has important application prospects in basic scientific research, gravity measurement, resource exploration, gravity-assisted navigation and other fields. [0003] Atom interferometers generally include the processes of cooling, upward throwing, interference and detection, and this series of behaviors of manipulating atoms is basically done...

AI Technical Summary

Problems solved by technology

However, when it is modulated with an electro-optical modulator, it will produce two sidebands, and it has no way to eliminate the other one, so in the experiment, there will be a pair of Raman light with a larger detuning amount that also acts on the atom, which affects our The measurement results are disturbed, which ultimately reduces the measurement resolution considerably

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