728nm frequency stabilized laser standard generation device and method thereof

Abstract

The invention discloses a 728nm frequency stabilized laser standard generation device which comprises a 455nm wavelength pump laser, a 728nm wavelength semiconductor laser, a glass air chamber, a magnetic field shielding box, a temperature control circuit and a screen lock circuit. The glass air chamber is provided with alkali metal cesium atoms, the magnetic field shielding box is used for isolating an earth magnetic field of the glass air chamber with the alkali metal cesium atoms, the temperature control circuit is used for controlling and stabilizing the temperature of the glass air chamber with the alkali metal cesium atoms, and the screen lock circuit is used for locking the frequency of the 728nm wavelength semiconductor laser on a 728nm laser spectrum line between the 5D excited state and the 6F excited state of the cesium atoms. The 728nm frequency stabilized laser standard generation device has the advantage that the device is clear in principle, simple in structure, easy to implement and stable in performance and has important application significance in the field of different subjects such as wavelength calibration of a laser wavelength meter, coherent optical communication, radar signal synchronization, optical frequency atom clocks and the like under special conditions.

Description

technical field [0001] The invention belongs to the technical field of laser technology and frequency-stabilized laser standards, and relates to a laser standard based on precise laser spectral frequency stabilization in excited states of cesium atoms, in particular to a precise spectral frequency stabilization of 728nm semiconductor lasers based on excited states of alkali metal cesium atoms Laser standard generation device and method thereof. Background technique [0002] The precise laser spectrum of the atom can be used to stabilize the frequency of various lasers to obtain a frequency-stabilized laser standard with an absolute standard meaning, usually also called a laser frequency standard. If combined with the now mature femtosecond laser frequency comb technology, an optical frequency atomic clock can be realized. In terms of specific applications, laser standards for precision laser spectral frequency stabilization using atomic transition lines have important appli...

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Problems solved by technology

But we also noticed that the 728nm transition between the excited state of the cesium atom and the excited state has never been studied for the laser spectrum used, and no related applications have been developed.

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