A frequency-stabilized power supply for precision lasers based on an ultra-stable f-p cavity

Abstract

The invention discloses a super-stable F-P cavity-based frequency stabilization power supply of a precise laser. The frequency stabilization power supply integrates a current control sub-system, a super-stable F-P cavity (Fabry-Perot cavity) and a temperature control sub-system thereof, a laser intensity measurement sub-system, a differential frequency stabilization sub-system and a current display sub-system, wherein the current control sub-system is used for generating a constant and adjustable current by an analogue circuit, the super-stable F-P cavity and the temperature control sub-system thereof is used for stabilizing the length of the F-P cavity by precise temperature control, narrowing laser line width and providing a reference frequency, the laser intensity measurement sub-system is used for detecting laser intensity, the differential frequency stabilization sub-system is used for processing a signal obtained by a laser intensity measurement module to generate an error signal, feeding back the error signal to the current control sub-system and improving the stability of the laser frequency, and the current display sub-system is used for displaying the current size of the laser. The super-stable F-P cavity-based frequency stabilization power supply of the precise laser, provided by the invention, can be used for providing a stable and adjustable current, and the frequency stability of the laser is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of laser frequency stabilizing power supply, in particular to a precision laser frequency stabilizing power supply based on an ultra-stable F-P cavity, which is suitable for application fields with strict requirements on laser frequency stability. Background technique [0002] With the development of the national economy, semiconductor lasers have received great attention in industrial production and experimental research. Especially in recent years, as a key component of atomic physics experiments, lasers have made it possible to use magneto-optical trap technology and cold atom technology using the hyperfine energy level, spin characteristics and energy level quantization of atoms. The frequency stability of the semiconductor laser will directly affect the performance of the system, and the frequency stability of the laser depends on the stability of the driving power supply, so it is imminent to improve t...

AI Technical Summary

Problems solved by technology

Although considerable progress has been made in research on laser current control at home and abroad, for occasions that require high-precision control of lasers, such as atomic physics experiments, it is still necessary to further improve its stability and reduce the linewidth of lasers.

Generally, the commercial laser frequency stabilization system only includes circuit modules, and requires the experimenter to manually build the optical path to provide the reference frequency required for frequency stabilization. complex, difficult to operate

At the same time, the current common driving power only includes the current control system. If you need to improve the laser frequency stability, you need to purchase or develop an additional frequency stabilization system, which is bulky and expensive. Therefore, it is necessary to combine the current control system and the frequency stabilization system. Each module is integrated into a stable frequency power supply

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