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A laser large detuning frequency stabilization device and method for EOM sideband modulation

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: 2022-08-05
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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  • A laser large detuning frequency stabilization device and method for EOM sideband modulation

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Embodiment Construction

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention, and not 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 concepts of the present invention.

[0029] see figure 1 , a laser large detuning frequency stabilization device of a kind of 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 the reference laser frequency locking unit, frequency detuning based on EOM sideband modulation unit, detection laser frequency locking unit;

[0030] The ...

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Abstract

The present invention provides a large detuning frequency stabilization device and method for a laser with EOM sideband modulation. The retarder (EOM) is used as a frequency reference to stabilize the frequency of the semiconductor laser of the SERF magnetometer, so as to ensure the long-term stability of the laser pumping alkali metal atoms and improve the detection sensitivity of the magnetic field measurement of the SERF magnetometer.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a device and method for stabilizing the frequency of a laser with large detuning with EOM sideband modulation. Background technique [0002] Semiconductor lasers have the advantages of small size, high efficiency, and narrow line width, 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 for quantum optics, quantum sensing, high-precision metrology, laser spectroscopy and high-precision measurement, such as laser cooling with 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 output las...

Claims

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Application Information

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Patent Type & Authority Patents(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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