Compact type laser system for atomic interferometer

An atom interferometer and laser system technology, applied in the field of laser sources, can solve the problems of difficult adjustment of optical components

Active Publication Date: 2019-04-26
CHINA JILIANG UNIV
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  • Abstract
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Problems solved by technology

This well-designed optical module is very stable and compact, but it is difficult to adjust when some optical components are damaged or need to be replaced

Method used

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  • Compact type laser system for atomic interferometer

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Embodiment Construction

[0016] In order to illustrate the specific flow of the present invention, the following will be described in detail in conjunction with the accompanying drawings.

[0017] refer to figure 1 , a compact laser system for an atom interferometer. The compact laser system in this invention includes:

[0018] Control system: data acquisition card, laser diode current controller, proportional integral differential circuit (PID), lock-in amplifier, voltage-controlled crystal oscillator.

[0019] Laser system: fiber-coupled diode laser module, fiber-coupled optical isolator module, fiber-coupled beam splitter module, fiber-coupled electro-optic modulator module, fiber coupler A, Doppler-free polarization spectroscopy module, fiber coupler B, acoustic Optical modulator module, mirror, fiber coupler C, electro-optic modulator module, beam 1, beam 2, beam 3, beam 4.

[0020] The control system is composed of a data acquisition card, a laser diode current controller, a proportional-inte...

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Abstract

The invention discloses a compact type laser system for an atomic interferometer. The compact type laser system for the atomic interferometer is composed of a control system and a laser system, and the control system controls the laser system through a data collection card, a laser diode current controller, a proportional integral differentiating circuit, a lock-in amplifier and a voltage controlled crystal oscillator. The laser system emits a 780nm laser through a diode optimal maser in an optical fiber coupling diode laser module (FDL), and then, the 780nm laser is coupled to PM optical fiber through the FDL treatment. A laser beam from the FDL gets better isolation through the module treatment of an optical fiber coupling optical isolator. Then, the laser beam is divided into two partsthrough an optical fiber coupling beam splitter, one part of the laser beam is used for locking and adjusting the laser frequency of the control system, and the other part of the laser beam is used for generating a cooling light beam, a purging light beam, a re-pumping light beam and raman light beam pairs. The laser system has the advantages of small volume, stable laser frequency and the like, and has good application prospects in portable type atomic interferometers.

Description

technical field [0001] The invention belongs to the technical field of laser sources, in particular to a compact laser system for an atom interferometer. Background technique [0002] Atom interferometers have been used to measure gravity, gravity gradients and rotation. High-precision atom interferometers have potential applications in technology and fundamental physics. The laser system is an important subsystem of the atom interferometer. Compact, robust and portable atom interferometers can be used in field and space applications, but usually laser systems are complex and bulky. Therefore, a portable atomic interferometer requires a simple and compact laser system design. [0003] In recent years, many efforts have been made to develop compact laser systems for atom interferometers. On the one hand, an integrated laser system in free space is designed, where the optical elements are designed and integrated in a stable optical module, and all the lasers required in th...

Claims

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Application Information

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IPC IPC(8): H01S3/098H01S3/13H01S3/30H03L7/26
CPCH01S3/1115H01S3/1304H01S3/302H03L7/26
Inventor 吴羽峰金尚忠方维严永强赵春柳陈君
Owner CHINA JILIANG UNIV
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