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EOM sideband modulated laser large detuning frequency stabilization device and method

A sideband modulation and laser technology, applied in the field of lasers, to achieve the effect of improving accuracy and sensitivity, and simple principle

Active Publication Date: 2022-04-12
ZHEJIANG LAB
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Problems solved by technology

[0006] The object of the present invention is to provide a laser large detuning frequency stabilization device and method for EOM sideband modulation to solve the problem of stable control of large detuning frequency of semiconductor lasers in high-precision atomic spin precession detection

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  • EOM sideband modulated laser large detuning frequency stabilization device and method

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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0029] refer to figure 1 , a laser large detuning frequency stabilization device for EOM sideband modulation of the present invention, wherein the thick solid line part is the optical path part, and the thin solid line is the circuit part, including a reference laser frequency locking unit, frequency detuning based on EOM sideband modulation unit, detection laser frequency locking unit;

[0...

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Abstract

The invention provides an EOM sideband modulated laser large detuning frequency stabilization device and method, and aims to solve the problem of large detuning frequency stability control of a semiconductor laser during high-precision atomic spin precession detection. The EOM-based semiconductor laser large detuning frequency stabilization device adopts an electro-optic phase delayer (EOM) as a frequency reference to stabilize the frequency of an SERF magnetometer; therefore, the long-term stability of alkali metal atoms pumped by laser is ensured, and the detection sensitivity of SERF magnetometer magnetic field measurement is improved.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a large detuning frequency stabilization device and method for lasers modulated by EOM sidebands. Background technique [0002] Semiconductor lasers have the advantages of small size, high efficiency, and narrow linewidth, and have been recognized as ideal light sources in atomic physics experiments. With the rapid development of semiconductor laser technology and the continuous improvement of the performance of semiconductor lasers, semiconductor lasers are widely used in experimental systems of quantum optics, quantum sensing, high-precision metrology, laser spectroscopy and high-precision measurement, such as laser cooling and trapping, atomic interferometry, atomic or optical clocks, etc. A stable laser frequency is one of the most important requirements for these experimental systems. In these systems, in order to reduce the frequency drift of the semiconductor laser output...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/068H01S5/0687G01R33/02
Inventor 于婷婷陆吉玺吴越邢博铮王子轩
Owner ZHEJIANG LAB
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